Looks like a great experiment with the strong highlights. Rather realistic especially on the nose and hair the highlights. Maybe I'd like some more texture 'inside' the hair (the hair that is the darkest and furthest from the viewer to help define it from her shirt/clothing. I know the area is very dark but some texture or something could have helped the part especially near her left cheek (next to strongest highlight) appear less flat and create depth instead. Still, it's a great piece!