A few things are bugging me on this piece--the legs don'g really seem to join with her body too well, it looks like she's got pretty oddly shaped hips. Also, her left leg is twisted to an angle that looks pretty painful to stand in...
her left hand look's kinda odd too, I think it's because there's too much of the darkest color on it
I like the idea, and the character has a lot of potential. Keep workin' on it!