Confidence is key.
Make sure you smell good and your breath isn't trash.
Also don't dress too classy or too swaggy, average will get you the most diversified collection of biddies.
Don't be cheesy either, be straightforward and relaxed when you're talking.
Talk from your balls. This means talk with a deep calm and collected voice.
Don't try too hard to make them laugh. Be cool.
Good luck my friend.