Actually I think these are some of my favorites.
All of them are great (by my standards, but this is my first time 'grading' any of them), but I feel as though your stands out most among the rest.
The progression is clear (as it is with many of them), the drawings are clean, and none of the evolutions seem like too big a jump; they seem pretty even between each, from basic to first to final.
Also, no part of it seems to evolve backwards (like moving wings into a cocoon on the body only to separate them back into wings) - not that these are bad things to do, it just seems a bit counterproductive.
In any case, though, I like all of the drawings here and I think my favorites include yours, Eol's second stage, Kadew's sketch, and then my second favorites would be paintseagull's and KoA's.
My only constructive criticism is that while the progression seems clear and natural, it also seems to follow a bath that's a bit overdone. The second stages are mostly reminiscent of Metapod and Kakuna, first stages like Caterpie, Venonat, and Larvesta.
That said, those may well be the only options that look... good?
In any case. You guys are great and I hope that I can eventually understand and start contributing myself, though I really don't think I'm as good using computer editors. Looks to me like you guys have and use Adobe Illustrator, which I do not have (nor do I have any experience with it), though I do have photoshop it's just... not as clean.
Anyway. Just my first two cents.