My teacher once said he was a «recovering perfectionist», best tip he had was to figure out why you wanted it to be perfect, and work to find out why you want it to be perfect. Perfectionism is sometimes super helpful to get the brain going, it also such a creative killer
My way to recover for perfectionism is related to the worry of being judged or having it fall flat. After I started to give validation to myself that most of the other opinions I get doesn’t matter too much, finishing up something was way easier for me. (That or put a fake deadline LOL)