Froggie, what gorgeous work! I particularly love that Harry is wearing a single shoe; it tells me how needy and wanting they were, how passionate, and gives me a context for this quiet scene. Love the poses, Harry's fabulous colour, Snape's crossed feet and their separate-but-togetherness.
I do hope that you'll archive this at WTP after the Games; the archive'll be poorer without it if you don't! Lovely, lovely work. *sighs*