Excellent work. I only have a couple of minor critiques. First, her eyes look a little off. Her right is a bit larger than the left. In fact, they don't seem to be on the correct angle with the rest of the face. They seem to slope down to the left a little. The other crique I have is really more of a suggestion. The blending of the shadows on her face...I would suggest evening out the tones some more, it appears grainy in the image above. Ase from these two minor things, this ia fantastic piece of work.