I'm going to break the trend of answers you could get using a google search and say three things that I personally am attracted to. This is definitely not for all girls, though I don't think anyone can claim speak for the entire female population.
+ Slightly mentally unbalanced. This sounds really odd but I have never more people I was attracted to than in my group therapy sessions. I guess crazy attracts crazy. Mentally unbalanced people are often more in touch with their emotions and better communicators, strangely. So to be more general, most people will go for people with personalities similar to their own. Try going after people who you actually have similarities with. Also people like people who are interesting. I hate to tell you no one wants to hear about you spending the day curtain shopping when they first meet you.
+ Honest intentions. You're just looking for sex? Say it. You're looking for friendship? Say it. You're looking for a long term commitment? Say it. Having to guess what someone wants from you, especially if you're someone who has had bad experiences with people in the past, can make a lot of people standoffish. Not everyone is looking for the same thing as you, you might as well make sure that you're on the same page as the other person. Mind, you don't need to go up to someone and go, "Hi my name is ___ and I'm just want to have sex with you."
+ And since you mentioned physically I think I, like many people, have a wide range I consider my 'type'. The most important things are the obvious, such as personal hygiene, please be clean and smell decent. I don't want someone drenched in lynx, I spent enough time in an all boys school that I like the people I'm with to smell like they're past puberty. I also think things like being able to actually see the person's eyes is important. Can't speak for anyone else but I can't stand it when hair covers someone's eyes. It's like half of the emotion is impossible to discern and eyes are cool.