Let me just start by saying that I'm absolutely inlove with her ear (- no fetishes, but that is just too sexy) and also the rest of her skin in the face and neck.
You have a very inspirering use of colours, the marine blue of the shirt against the curry yellow makes for an excellent contrast as a base. It makes the red hair pop out and blend in at the same time which really is a great effect.
The details of the blouse is amazing - especially considering the grain and noise in that part of the original stock photo - and the layers are very closely positioned, so it must have taken you quite some time. And I like that you didn't over-detail the hair, but kept that part very simple.
On the more negative side both of the arms are a little low detailed and you have a little edge you might want to retouch at the root of her hair on the top of her head ([link]).
For my part I really don't like the blue tooth, but if you wanted it like that, you shouldn't change it.