Help. Any advice about feeling more confident about my looks?

I have a lot going for me. I'm about to graduate from art school ( im majoring in audio production I would like to be a recording artist and record producer ), and also next yr I'm moving to L.A. to pursue careers in both acting and music. I'm a laid back, kind, well mannered, caring, compionate, thoughtful, considerate, trustworthy, reliable, independent, friendly, some what shy, creative, and funny. When it comes to girls I just don't have the same confidence I have with everything else. I have a lot of female friends, but as far me having a romantic relationship not so much. I guess I don't really try to ask girls out b/c I feel that wouldn't like me b/c they'd probably find me to be unattractive. I don't find myself to be unattractive, but I was told that I was once by a girl I like when I was like 13 and that has really stuck with me; and I've never really gotten over it. I'm 23 now and I just want to feel better about my looks and have the same confidence I girls as I do with other phases of my life. I just want to feel better about myself and open up more. I think that feeling more secure about my looks would help me break out of my shell when it comes to girls in a romantic sense. Sorry the long details. I really would appreciate your advice if you all have any. Thanks and be blessed everyone!