That really does look like the perfect topology head there and the likeness is already there - even at this early stage.
One thing though (nothing to do with your work) - I never noticed how big her nose is before - that front view image you have makes it look like she played rugby or something. I`m betting she would have that fixed if she was a film star today.
All my images are in HD - Plz right click and view image.
3D Molder at AO.com.