Wow; that lighting is just perfect. There is such an incredibly smooth transition all the way through the grey scales with not a blown highlight nor a lost shadow. And she stands out brilliantly against the pitch black. I do also like the way the end of her hair is lit up, the brightness of her eyes and the softness of her mouth. The angling of her arms like that make the image flow both along her arms and up her torso to bring the focus onto her face; had her right arm not been brought forward like that I think it would have been a distraction and would have lost that flow of shape. She's doubtless an astonishingly beautiful woman without any help, but you've REALLY brought that home in this image.
