This isn't really a WIP, but I don't consider it finished. Since this is my first post, I may as well contribute something..

Well, I obviously stole some of the colors from the GBA sprite.. but besides that, the sprite has an obvious unprofessionalism that I can't pin down and also, I'm sure, some other errors. The wrinkles I'm very unhappy with, but didn't know what to do about. Since there are some great pixel artists/critics here, I'm sure you'll be able to nitpick/edit this thing to death, and hopefully it'll result in a much better sprite.