The baillarina girl looks really good! I assume it's a gradient map applied over the shadows layer?
The cheeckbones and jaw seem a little off... l had to put them side to side to try to idenitfy what was bugging me.
Obviously we are not aiming for 100% match, just to capture the feel and visual look of it, but I couldn't help notice it.
But man, that shading is REALLY good, and the rest of the whole thing is also very well captured.
And the 3D head is also expertly done. overally you clearly have really good 3D spatial space awareness.