Recently, I've become interested in trying to make my own Pokemon, from scratch, partly inspired by Smogon's Create-a-Pokemon project.
Currently, I've made only four sprites, although I have much more hand-drawn artwork: simple concepts for more than a dozen Pokemon, and written concepts for more than 31.
Although I can't upload the drawings at this moment (due to the lack of a sufficient camera), I'd appreciate feedback on the sprites. Thank you.
Please give credit if you're going to use these sprites elsewhere (although I might wonder why you'd choose my sprites in the first place...); until further notice, the only websites where these images will be located are NSM Forums, Smogon Forums, and Snivypedia.
Bullion, Psychic/Rock "legendary"
Another attempt; left: no changes / right: less visible lines between, almost like a solid rock with cracks in it (closer to my original concept, actually); different shading on right hand.
Far right: With better shading around the borders, slightly increased "arm stone" size, and more stray stones floating around hands/wrists, something that would provide animation effect, if animated.
Spindlewe, Ronjab, and Thoxicon, Bug/Fighting "pseudo-legendaries." Right: V2.0, experimenting with non-smushed heads and slightly-different shading.
Totaa, the Pepper Imp Pokemon, the "fire starter" of the region, and Gemtoa, the Tiki Imp Pokemon. Evolution Gremilion, the Tiki Imp Pokemon, as well.
Zelliontul: Ghost type "event" legendary with Multitype, that allows it to gain a second type. I was going to make this sprite last, as a type of secret surprise, but I decided that this would be good to practice with. Top left sprite takes preference over the right one. If I could, they'd both be part of the same animation.
Right of color chart: Unsealed form, when it is in a location other than an inside location (open-roofed areas like stadiums would count as outside).
Far right: Experimentation with shading. Which do you think looks better of the two?
Tykogi, leader of the scholar trio. Inadvertently my first back sprite. Front sprite... coming soon?
Nimbomb, Stratobowl, and Rambostratus, Electric-Fighting.
While I, personally, like Nimbomb, and the sprites of the other two are decent/mediocre, I feel as if their sprites do not capture the feel of my original concept at all.
Tyaton; there's a long story behind this one: This was one of my recent sprite fusions; everybody seemed to love it. So I made a new sprite for it, over 80% from scratch (everything- except the screws and half-orbs on the sides- was made by me).
The "in-game" story is that it's a hybrid Pokemon manufactured by the evil orginization.
Currently unnamed toucan. As you can see, I had trouble with the body and wing shape; after browsing, I was inspired to make the wings a slightly-bent-crescent shape.
Romawh; although it is a Fighting-type, Romawh somehow manages to generate a mysterious energy force in order to float above the ground. A majority of the time, it keeps its fingers curled; its thumbs cannot move at all, however.
Sprite of Betledye (Thoraxun coming soon, as soon as I find a good pose D:); although it's not exactly at the same size/proportions of the sketch, I'm satisfied. Left sprite takes priority over right.
OTHER POKEMON
There's a bunch going on in this image:
1: A new Pokemon, Lilblu, a "baby form" of Swablu.
2: New Swablu sprite I made, based on current G5 one.
3: New Altaria sprite I made.
4: "Sky Incense," used to breed Lilblu.
Wormbelle, "evolution" of Wormadam, plant cloak. Based on making Lilblu and this one, I find that it's a lot easier making Pokemon based on already-existing concepts, because you can get a better vision of what the result will be?
I will only be making new sprites (for old Pokemon) for Pokemon that appear in the "Regional Dex."
Crobuckle, "evolution" of Shuckle. Not too sure about the shading (reason for two versions). Looks a bit rough still. The head is a modified Shuckle head.
FULL SPRITE SET
Simple little Almasil, a single-stage Ghost-type Pokemon (was thinking of an evolution, that is now its own idea, as part of a trio) might be among your first Pokemon caught; although its base stat total is no more than 400 (300 was way too low, and 380 as well), its type is helpful in fighting the gym leaders of Lazuli City, Moriarty & Miller (along with Lilblu, which might be received as a gift Pokemon). It can also learn a few Fire-type moves, as hinted at by the fireballs around it.
Inspired particularly by the Pac-Man ghosts...
Originally intended to be the third-stage evolution of Almasil, Gilidoyn (pronounced like Gil-lee-doih-en, or Gilly-doin for simplification) became its own idea (albeit part of a Ghost-Dark-Fighting trio with Almasil) after I failed to make a proper sprite of the second-stage evolution.
The Dusknoir-esque color scheme was intended, but the shiny color scheme is supposed to be more sinister in nature, opposite to its personality as a type of guardian.
Barbrab (right) and Tharapick, Steel and Steel/Ground types. Tharapick's design shares little similarities to my original concept, but Barbrab's is really close (especially the ridge and tabs/spikes).
Jollos, Psychic/Grass "legendary." Now in a better pose that doesn't make his hands look broken. I also improved the legs and made a slight shading adjustment.
I'm not sure which back sprite is better: while the one on the left connects his affiliation with nature, the one on the right shows that, despite that, his body is still merely artificial.
SKETCHES
Sketch for a Bug/Dragon (originally Fire/Dragon) and evo. Both of these together are the size of my thumb (about three inches long), which means they are rather small, compared to normal drawings, and don't allow for too much detail.
Their ability increases damage done to an opponent switching in during the middle of battle, discouraging frequent switch-ins.
Currently, I've made only four sprites, although I have much more hand-drawn artwork: simple concepts for more than a dozen Pokemon, and written concepts for more than 31.
Although I can't upload the drawings at this moment (due to the lack of a sufficient camera), I'd appreciate feedback on the sprites. Thank you.
Please give credit if you're going to use these sprites elsewhere (although I might wonder why you'd choose my sprites in the first place...); until further notice, the only websites where these images will be located are NSM Forums, Smogon Forums, and Snivypedia.

Bullion, Psychic/Rock "legendary"

Another attempt; left: no changes / right: less visible lines between, almost like a solid rock with cracks in it (closer to my original concept, actually); different shading on right hand.
Far right: With better shading around the borders, slightly increased "arm stone" size, and more stray stones floating around hands/wrists, something that would provide animation effect, if animated.

Spindlewe, Ronjab, and Thoxicon, Bug/Fighting "pseudo-legendaries." Right: V2.0, experimenting with non-smushed heads and slightly-different shading.

Totaa, the Pepper Imp Pokemon, the "fire starter" of the region, and Gemtoa, the Tiki Imp Pokemon. Evolution Gremilion, the Tiki Imp Pokemon, as well.

Zelliontul: Ghost type "event" legendary with Multitype, that allows it to gain a second type. I was going to make this sprite last, as a type of secret surprise, but I decided that this would be good to practice with. Top left sprite takes preference over the right one. If I could, they'd both be part of the same animation.
Right of color chart: Unsealed form, when it is in a location other than an inside location (open-roofed areas like stadiums would count as outside).
Far right: Experimentation with shading. Which do you think looks better of the two?

Tykogi, leader of the scholar trio. Inadvertently my first back sprite. Front sprite... coming soon?

Nimbomb, Stratobowl, and Rambostratus, Electric-Fighting.
While I, personally, like Nimbomb, and the sprites of the other two are decent/mediocre, I feel as if their sprites do not capture the feel of my original concept at all.

Tyaton; there's a long story behind this one: This was one of my recent sprite fusions; everybody seemed to love it. So I made a new sprite for it, over 80% from scratch (everything- except the screws and half-orbs on the sides- was made by me).
The "in-game" story is that it's a hybrid Pokemon manufactured by the evil orginization.
Currently unnamed toucan. As you can see, I had trouble with the body and wing shape; after browsing, I was inspired to make the wings a slightly-bent-crescent shape.
Romawh; although it is a Fighting-type, Romawh somehow manages to generate a mysterious energy force in order to float above the ground. A majority of the time, it keeps its fingers curled; its thumbs cannot move at all, however.

Sprite of Betledye (Thoraxun coming soon, as soon as I find a good pose D:); although it's not exactly at the same size/proportions of the sketch, I'm satisfied. Left sprite takes priority over right.
OTHER POKEMON

There's a bunch going on in this image:
1: A new Pokemon, Lilblu, a "baby form" of Swablu.
2: New Swablu sprite I made, based on current G5 one.
3: New Altaria sprite I made.
4: "Sky Incense," used to breed Lilblu.

Wormbelle, "evolution" of Wormadam, plant cloak. Based on making Lilblu and this one, I find that it's a lot easier making Pokemon based on already-existing concepts, because you can get a better vision of what the result will be?
I will only be making new sprites (for old Pokemon) for Pokemon that appear in the "Regional Dex."
Crobuckle, "evolution" of Shuckle. Not too sure about the shading (reason for two versions). Looks a bit rough still. The head is a modified Shuckle head.
FULL SPRITE SET

Simple little Almasil, a single-stage Ghost-type Pokemon (was thinking of an evolution, that is now its own idea, as part of a trio) might be among your first Pokemon caught; although its base stat total is no more than 400 (300 was way too low, and 380 as well), its type is helpful in fighting the gym leaders of Lazuli City, Moriarty & Miller (along with Lilblu, which might be received as a gift Pokemon). It can also learn a few Fire-type moves, as hinted at by the fireballs around it.
Inspired particularly by the Pac-Man ghosts...

Originally intended to be the third-stage evolution of Almasil, Gilidoyn (pronounced like Gil-lee-doih-en, or Gilly-doin for simplification) became its own idea (albeit part of a Ghost-Dark-Fighting trio with Almasil) after I failed to make a proper sprite of the second-stage evolution.
The Dusknoir-esque color scheme was intended, but the shiny color scheme is supposed to be more sinister in nature, opposite to its personality as a type of guardian.

Barbrab (right) and Tharapick, Steel and Steel/Ground types. Tharapick's design shares little similarities to my original concept, but Barbrab's is really close (especially the ridge and tabs/spikes).

Jollos, Psychic/Grass "legendary." Now in a better pose that doesn't make his hands look broken. I also improved the legs and made a slight shading adjustment.
I'm not sure which back sprite is better: while the one on the left connects his affiliation with nature, the one on the right shows that, despite that, his body is still merely artificial.
SKETCHES
Sketch for a Bug/Dragon (originally Fire/Dragon) and evo. Both of these together are the size of my thumb (about three inches long), which means they are rather small, compared to normal drawings, and don't allow for too much detail.
Their ability increases damage done to an opponent switching in during the middle of battle, discouraging frequent switch-ins.