I love the vignettes surrounding them...that is a wonderful idea. I feel like an idiot but I'm going to ask because my curiosity is getting the better of me. What is the one on the very bottom? I can't figure that one out. I'm sure as soon as you tell me I'll smack myself, I just can't think of it.
I love the detail of the little scenes though, and the center portrait is lovely as well. I agree with WhiteCotton--I really like the darkness of it. It really suits Snape and his role as the hero in darkness throughout the books.