I’m defintly not saying I’m good, but I’ve been told I should do more singing for audiences and such. I love singing but the idea of having to do so in front of so many others scares me.
You can’t get rid of stage fright – nearly all performers have some because things can go wrong and being nervous puts an edge on a live performance that makes it more interesting.
What you can do is work on controlling the extreme reaction.
Among the things you can try are:
Find ways to perform for small groups and work up to larger groups. Maybe just ask some friends to come over or ask around about groups doing singing at church or via the library.
Sit in front of a full length (or full wall) mirror and watch yourself sing. Practice moves and notice how they feel and look. I mean girls probably still practice kissing, squinting at themselves, and boys pose in front of a mirror figuring out how to look cool (at least I hope a lot fewer are practicing handling a cigarette as we did when I was growing up.)
If necessary, work on a stage person that is a role you play. This person is narrower than you are, more focused on her singing, and has fewer fears because any failures are the fault of the role, which can always be adjusted, and not of your builtin personality. This is why many comics were shy kids – they built a personality that was funny and didn’t have those faults.