Very good job on the shading! I really like the amount of detail you put in this, with the various hues reflecting the body parts in light and more in the shadows; seen from further away, it could look like a real picture, but it's a good thing in my opinion that it's not more "detailed": the fact that one can still see it's a vector brings more to the picture, I think, than making it look "too" realistic. The hair also is nicely done, with the reflections in them highlighting their move/way of floating. Perhaps the general color tone should have been very slightly brighter, though, to place more of a focus on the character? But this is probably more a matter of personal preference than of technique, anyway.