insideout,

It sounds like you don't think a man could appreciate you for the person you are, and so you obsess about your looks because you feel that it covers up (literally) the insecurity inside.

Have you thought about communicating more openly with guys you like when they are nervous around you? You could say, "I don't know about you, but I'm feeling really nervous right now because I like you" or something equally as plausible. Sometimes that is enough to put us guys at ease. Many women will not take initiative with saying something like that, because culture teaches you to be passive and wait for men to be assertive. Don't buy into that. We're all people, and people are impressed by honesty/bravery/soul.

Additionally, I don't know what kind of guys you usually go after, but if you find yourself basing your dating choices more on looks than personality, then it might be a good time to think about what matters most to you in a partner. I know the cultural pressure exists to be attractive and acquire an attractive partner, but listen to your gut/heart and think about what matters most to you.

We are all insecure beings. All of us. And we all want and deserve love.