I think that looks awesome. It's nice to be humble as an artist, but imo your drawings look like you know what you're doing. The lineart is clean, and your subjects have a lot of character in their facial expressions and/or poses, something that can be hard to pull off. I love the little white highlights and the lighting in this one, and how the light source is coming from below instead of above, the latter of which is much more frequently seen. If there's anything to critique, the fill colours don't totally touch the lineart in some places, which looks a little messy, so watch out for that in the future. Also, I'd say lack of background is better than one that's seemingly rushed. The Metagross up there is also really sleek and well done!