brilliant so far, i like adding serverus and peter together, that should be interesting. snape will probably not be as slytherin-ish. even though ravenclaw and slytherin have nothing against each other, mutual respect i think. so that won't be too bad. i would have though naricassa would be the one is ravenclaw not snape, but hey.
i liked everything else, Lily sesems the inteligent type, but it not going to flaunt it. the observer. I'm sure Harry and Lily will always be close, how close, well that up to you. look forward to what else you come up with.
look forward to seee classes, and what the slytherins make of Harry. update soon, and congrats.