I keep changing my mind about it, which is why I didn't remark on it earlier. First, I LOVE the lighting on the model. It gives subtle but strong shadow variations that you don't normally see, and I'm dying to try to duplicate the effect.
That said, the scarf seems a jarring note in the otherwise soft and subtle composition. I started out disliking it, then I looked at it again, and I really liked the contrast, now I'm switching back and forth...
I've come back to it three times, though, so you've got something working there!