This is a very nice portrait. I like the cropping, colors and posture of the model. Also, in a portrait like this I would expect the model to have her eyes open. The picture might be better with it, but it is perhaps now more original and interesting. That being said I would love to see a version with opened eyes, with perhaps a locally boosted contrast and brightness. I do have a small reservation regarding the technique. The noise present throughout the image is quite distracting. It is visible even in a small crop. If it was added in post-processing, I think image would do without it. If it is in-camera, perhaps applying less aggressive noise filter would deliver better results.
All in all a picture with a couple of technical issues, but overall a very good portrait.