It looks nice, really love the smooth dithering on the cheeks and the eyes are very 'challenging'.
A few points that can be improved:
1. Eyes don't look at the camera, destroys the 'challenging' way they look. Bummer!
2. The hair looks a bit dull, the shininess of that highlight comes out of nowhere (if you compare with the rest of the hair). Maybe you could make the second lightest shade brighter.
3. Seems like you forgot to do her sholder? It's still in line art.
4. Yes, somethings missing. Maybe you need to decorate the piece a bit. Flowers, candy, blood, whatever.