This could be a lovely,incredibly beautiful,portrait, but as it is there is something about it that is just off the mark. There appears to be a silver sheen over the model that I find rather odd, almost as though her skin and hair have been partially desaturated. The result is that the viewers concentration centres on the model's lips and eyes, but (for me at any rate) to the point that those are almost all I see - as though the individual is no more than her features. Hmm, I'm not sure I have articulated my thoughts very well here - I wouln't normally invite this, but if you want clarification, drop me a PM
Seems like a really good portrait but the colours and saturation are ruining it. The face looks almost grey? on the plus side the composition/pose/focus are excellent