Grab a drink and watch a few people. You will probably see someone much worse than you could ever be. This is a confidence booster!
Step2
Sing along to a few songs. This helps get your voice warmed up and gets you in the mood. Remember you are here to have fun.
Step3
Pick your song. It is best to pick an upbeat song that everyone knows. People will sing along with you, which will put you at ease. Make sure you know this song well, especially if this is your first time.
Step4
Get up there and sing your heart out! Don't be shy. People want a show. Dance around a little. It is much more fun for your audience if you are moving rather than just standing completely still. Try to involve them if it's possible. Pretend that you're alone in your bathroom. I know you sing in there ... don't deny it.
Step5
Make sure you are confident! Confidence gets you everywhere in life. Even if you're faking it. Most of all have fun. If you're having fun so will everyone else!
Tips & Warnings
Don't get completely drunk. No one wants to see someone completely wasted try to sing.
Bring a friend. Having a partner will help bring out your inner rock star.
If you are drinking at the bar, get a ride home. No one likes a drunk driver.