Actually... we have to talk at least a little bit first. Though I can obviously notice an attractive woman appearance wise, I doubt I'd approach her or hit on her without finding something to talk about first.
One crush, we'd end up talking about jobs etc... the things we had in common was what made me want to ask her out. We had a lot of things in common - this peaked my curiosity. Sure, she's attractive, but that usually brings out my shyness.
I think that for me to get comfortable enough to ask a woman out, I'd have to be able to talk to her, and the conversation would have to be pretty easy. Appearance, while it might be a thing that makes me curious enough to want to find out more, would not be enough to get me over to any woman's table to talk to her.
Her pretty face, eyes, smile and then her physical health. A girl that is genuine and talks to others with no judgement. She looks independent doing her own thing, has manners and respect. Has a great personality and a positive attitude. I'm more interested in girls from other schools or girls that transferred to my school. They don't know me and I don't know them and this is where I show my best sides of myself. It's more mysterious too haha. Things can get better from there. To me I think she has to have a pretty face at least. I don't really like any girls at my school even if they are pretty, gorgeous or whatever I just know them too well and they know me. There's no room for change when you're seen as this or that person. It kind of sucks.