[jokethrowaway]

I'll give you a tip which is what got me over my perfectionism as a kid.

Assume your contribution is not going to be perfect and just deliver your mediocre speech. You know you'll deliver a mediocre speech, so if people take it badly, it's to be expected. If people take it well, you'll be positively surprised.

Do it more and more and you'll get better.

Listen to good speeches and learn from them or flat out copy ideas.

This works with (mostly) everything you do.