Instead of black and white, I would like to see this image with a version with tons of dark blue and a gradient of purple. The character's skin could be with tons of blue, not to much: it could be a saturated blue so it wouldnt feel to of, and the background with gradients of purple maybe even with vivid red from the bottom. the light spots could show even more if you use a lighter color, but this would only be to be seen in the diferent colors, on the other hand Im not sure if it would be necessary to change that point.
First off, This is a pretty big improvement from what I have seen from you previously. Great use of color to bring out little highlights in the piece, and the grey is a very nice way to demonstrate the emotion of the painting. The lips are well put together, and the very soft tones on the face and skin are well put together, and the contrast against the hair is really well executed. A little harsh critique, I would have liked to see a little more detail in the eye, making it pop out like you did with the stars.
Next, This background is incredible. Really good contrast in terms of how It shows up on it's own, but it could have been either a little darker or a little lighter to contrast the character them self. The sepia tones were a really good choice, A little more detail in the feathers to the immediate right of the character could have been helpful.
One last little note, I love the concept behind this piece, and I really love how the hair looks. This is a really well done over-all piece.