Lily and James because I love them so much, as individuals AND as a couple!
And while I honestly love the character of Severus Snape (he's a guy I like to dislike!), I'm "Team James". Always have been, always will be.
Just a tiny doodle because I felt like it. Took me about seven seconds, nothing special, didn't give a damn about anatomy, blabla. I still like it, they're cute.
Characters belong to JKR, obviously.