Very nice flame, the body is dead on. I did not presume to post the pics, but this is the link I was looking at. Where you were wondering how to improve the face.
http://www.flamegrape.com/pic/xev_render_26aug02f.jpg
I think perhaps if she had a dip in her upper lip and that the pupils were slightly enlarged and moved a fraction away from the nose, that might be what you are looking for.
look at this pic http://xeniaseeberg.biz/photoGallery/images-photos/60.jpg and you can see what I mean.
keep up the good work.