I love the soft shading, the use of the green lighting and highlights. The textures of the blankets, the throw-rug, the walls, the skin... what sort of medium did you use? Whatever it is, I want to try it. It looks like it could be pastels, but not quite. Either way, it's a stunning piece of art. The details are exquisite.
Snape's arse, the little bit of hair under Harry's arm, Harry's feet (OMG Harry's feet), the feathery details of the hair, the highlights on the blindfold... magnificent.