Here is some amateur work I did. Their all made out of different pieces from different sprites. I take a pair of arms, a pair of feet, a head, a body, legs/pants/skirt sometimes, and then I add 'em all together. I also recolor them if I want.
lol, that's probably the one I did the least amount of work on. I took 3 different sprites. Gardevoirs body, a head(forgot the pokemon), and Flygon's wings and added them all together. It took like 5 minutes.