I agree that the shadows and highlights tend to overemphasize the chin, and give a somewhat 'dented' look to the right side of her face. One other thing that bothers me is the hair, whch lacks detail, even for a .JPG. It appears that the noise reduction was a little too aggressive.
style="BACKGROUND-COLOR: #000000"I don't do much people photography, but do enjoy seeing good portrait work. Most of your posts are spot on as far as I can tell, with very good lighting and composition.