Wow! This is fantastic! Her skin is amazing [wish mine looked that good]. What I think is really amazing with this is all the different textures, brushes you used to create this. Normally, I see manips using too many textures and what but you have seemed to used the right amount without over burdening the piece.
The plan, dark background also helps emphasize her, drawing the viewer’s attention to her.
The highlights her skin—the light source looks a bit off in places—shoot, I’m nitpicking—it’s a really nice piece, by far one of the better photo manips I’ve seen!