I like it. I like that it's colored and I like that you took into account where the light was comming from and you shaded appropriately. There are only a few things that bother me about this picture. One is the outlines appear to be... a little sketchy. Like you worked it out and your hand slipped and you didn't want to erase it. Perhaps try cleaning up those outlines next time you draw something?
The other thing that seems to be a little off is the actual anatomy. That can be remedied with a quick skeleton sketch beforehand that consists of basic shapes to work out the anatomy kinks before you actually get started drawing.
Hope this helps. Cheers!