Beautiful work. Her eyes are the best. Her face is a little too rectangular. The shading is soft. I like that. Tooth are a little strange. But it isn't a fault because some people really have that sort of tooth. Her eyes are so shiny. As a conclusion I think you should correct just the face shape. The lower part. I am not a specialist, but I have tried to give you the best advice I could. Your technique is really good. I would prefer that the shadows would be more soft. You know...More naturally drown as they have been. I am sure you can do more.