How to approach a girl in a club/bar?

I know when a girl is showing interest in me in a club or bar, but after that I am pretty much useless. I have doubts in my head after being re-assured (even overhearing the girl to her friends) so what would be the best way to go up to a girl and begin from there?

This is what I look like: http://www.flickr.com/photos/84149958@N05/7705787974/in/photostream/

a young "PLAYER"2012-09-01T09:44:48Z

Favorite Answer

''what's good to drink here.''

Start with that.