1) Make your move, unless it is your intention to be nothing more than 3rd wheel.
2) if your move fails, change target or try again.
3) If friendzoned, immediately find another target. Friendzone is torture. You do NOT want to inhabit that realm.
4) Chicks dig confidence. Confidence is available only to those with experience and inside information. Inside information is best attained through a combination of failed and successful attempts.
5) Fear not failure. No war is won in a single battle.
6) If all of the above fails, simply ask Jeeves.