Neytiri from (Avatar)

Hello everyone,
New to this forum and I was hoping for some advice, help and maybe providing short tutorials if possible. Mainly for now I need help in modeling the head of Neytiri or maybe sculpting (which I have never done before). Blueprints for head were very hard to come by but from ones I’ve found I have set them us as shown.

I need some advice on if I am doing this right or should I be doing this a different way ?
Oh I also have these blueprints is well.