Perfectionism isn’t really perfectionism. You are not perfecting anything. Perfectionism is protectionism. You are protecting yourself, or you are attempting to protect yourself from any sling shot or arrow. Tough. They are coming anyway. They are coming in an unfair way. It’s not fair. Somebody may read it and hate it even though it’s great.
Or, what may happen is they might read it and say, “Great. This is a pretty typical first draft. Liked part of it, didn’t like part of it. There’s some big problems.” Meanwhile you have been in the shower practicing your Oscar speech. That’s okay. But just understand that you are not actually perfecting things when you fall into the trap of “perfectionism”. Craig Mazin, Screenwriter