The best way to get a girl’s attention is to make her feel like she stands out above the crowd. Even if you have little experience in how to flirt with women, it should be easy to get the attention of someone who’s caught your eye. Of course, she needs to know that you’re looking at her. Don’t be too obvious or actually stare. That’s just creepy. Once you see that she has noticed you noticing her, smile at her and give a little wave. If she is obviously interested, have the bar tender send her over a drink. That will open up the door for you to actually go introduce yourself.