A R Rahman made the music for Roja, his first-ever feature film. Legend has it that when it was his turn to sing a few lines for the song, he refused to do it with other people in the studio. Imagine - being that shy! He consented after a lot of back and forth, and only after turning all the lights off. All to sing a couple of lines, by the way.
We all have to start somewhere. And most times, it does feel awkward. Uncomfortable. Debilitating. It is how it is. You have to start. Do.
You never know, you can end up somewhere rather cool.