Well here's another render which is not as good in my honest opinion. Yes, it's the eyes again! Crucibelle you were right, I've lightened the sclera and vincebagna you were spot on about the diffuse colour for the sclera, it should have been white and changing it resulted in these highlights. BUT in my opinion they're (the reflections) very intrusive especially for someone with such large eyes.

Also have a look around the lacrimals, there shouldn't be a black area there should there? It looks like here eyes don't fit her sockets! And there are a few AO artifact floating around too. I know I can sort these things out in post but I'd prefer to get it as good as I can without Photoshop.

Well I feel I'm getting there and learning lots but I've a way to go I think. What do you guys think?