Thats a fantastic picture. All the details, the way you used the colours, the way the face look so.. realistic. And the background is also art if it just stands alone. The shadows is just perfect.. But, her teeth.. They are kinda.. anoying I guess, they don't "fit in" - they look a bit.. wrong.. But teeth is hard to make nice.
But anyways, I will give you 10/10 for this great piece of genius art!