Ok, serious post time.
You say 'hot girl'. What does this mean? If you're talking purely about how they look, then my answer is simple - pay for a prosttute.
However, I'm going to assume you have more substance than that, and by 'hot', you mean somebody YOU are attracted to, on every level.
My advice: be yourself (listen to the sound of a thousand readers cringing in their seats) - but more importantly, be confident in being yourself. Be proud of the person you really are, and let it show. Don't put on an act. Don't try and impress people. Just live your life, and do what makes you happy. You want somebody you're compatible with, right? This is the only way you'll find that person. Just relax, live your life, and enjoy yourself.
To be quite honest, I wanted the post to be very clear that physical attractiveness in a girl is the most important thing for me. I can cut back or even give up on everything else. Call me shallow, but the reason I want physical attractiveness is because I personally don't have it. We all want what we don't have. And it will definitely help my children to have an attractive mom -- cuz I won't be helping them in that area.