Great image !
Although I have a few crits. 
The specular seems a little too high on the upper hat/horn part. And the fur seems a little out of place.
Other than that the image works great, the lighting is very good, but personnaly I would prefer to see the same kind of image but more abstract/surreal. You have some great graphical parts in your image (both 2d and 3d), but all the different “objects” near that girl seem like you don’t dare going further/wilder, and you use that girl’s face as an element of “concreteness”. (I’m not trying to analyse you, just giving my impressions).
Anyway, great piece ! 