OH MY! *hugs you hard* It's exquisite. Uniforms are one of my fav kinks, and you've done them up so royally--blue, lil' gold buttons and flashing, and white breeches! Snape's presence just seems to be holding Harry there; look at that hesitant look over his shoulder, and Snape's expression says they're far from finished. Great background too, all those paned windows and the storm raging on the outside. The entire picture is charged, from the weather to the tension and intention. I really like the red, white and blue of it, the blush on Snape's chest and Harry's bottom, the way your eye is drawn to the wine.
I'm proud of you, Snitch! You kicked us off wonderfully!