I don't think it's really possible to decide the "out of my league" thing as a man when it comes to looks. According to my own experiences, if you look average and are of average fitness, but otherwise very charming, you can get women from any league. Judging the photos, I don't see any problems in your particular case. She's cute, man, don't give up.
If you really think it was the fact that you came off as too needy, you can try to stage it like I earlier mentioned, just talk about it to some dude you know when she can overhear, tell him you were out with a nice girl, and that it went really well at first, but that you might have blundered it (again) because you drank too much and probably turned into a clingy moron. You can even use this situation to make her some indirect compliments, talk about how funny she was or that it was nice to be out with someone who got your jokes, etc.
