I don't want to disclose my gender online for personal reasons but I'll admit to liking girls. As for more specific traits I find myself drawn to fair, skinny, youthful girls, but not to prepubescent ones.
I don't make judgements on people for not matching these traits, but the farther one deviates from this archetype the less sexual attraction I'm likely to feel, as I'm sure is simple enough to understand xD
I'm capable of finding certain men more or less attractive than others, even to the point of imagining I would find them sexy were I into guys, but I've never actually felt said attraction.