Oh this looks interesting I think it might be the pose that drew me in as well as the shading. I like the contrast in shades. The hands look good too, though some of the fingers are too thin on the hand over at the right.
I like the subtle evil expression on the face. It might not be so much as evil, but it's kind of seductive.
The face is a bit uneven near the chin... if you look near the mouth, it appears the right side is wider than the left.
The head almost feels a little too big, but I think that it's just the angle of the pose, so I wouldn't worry about it. The hands fit the size of the head
I'd like to see this picture with a background! I bet it would be even more eye-catching that way!