Thanks Miascugh! It was so odd, until I saw your edit, I really didn't notice the intensity of the hair line. I really like the shadow youve done on her chest aswell. I can totally see what you mean.
Niss, over at PJ also suggested that I make the highlights a little brighter and he made an edit for me aswell:

I like elements of both of the edits. I'm trying to incorporate tips from both of you, although I think Niss' edit may be a little too intense in some places, because I dont really want to make her look as shiny as that.
Will update when I've done more. I'm hoping to wrap up this piece soon so I can get started on some new work. Thanks for the help though everyone!
UPDATE: Here's my new edit

Major difference is that I used the orange of the hair to shade the rest of the face, it worked more effectively than I imagined, an I think it sort of rounds the piece off. But I'm not sure. Also tried to fix the hair with a couple of highlights, and borrowed some of Miascugh's shadowing suggestion. I did some more work on the outlines aswell.