…go back and re-read one of your very first pieces of fan fic…. just do it. You’ll never laugh at a newbie in any field ever again!
In my case, I am re-reading my Anne de Bourgh series. OMG! I shudder with embarrassment at every single page I have written. Thank God I took it down from DWG!
Addendum: Yet, on further reflection, I have not been as prolific nor have I written with quite so much enthusiastic humor since then. I have no idea where that confidence came from because it certainly doesn’t exist today. I over-think everything!