As a guy, I'm figuring out what I find attractive. I care that she looks cute and healthy. That can come in many forms. What attracts me first is her eyes and then I look at her hair. Occasionally, we might steal a glance to look at her body but it's not a priority on top of others.
Before I ask out a woman I try to see if I can have a conversation with her or there is some banter. I look directly into her eyes and it's exciting. If she's got both then I ask for a date.