I need encouragement to post my first fic

I've never written much before. And like yknow, English isn't my first language but I've reached level C2 in English courses like 3 years ago... and I read a lot in English.

There's a somewhat new ship in a fandom, and their tag has like 4 fics... and I have too many fantasies about them lmao..

I need tips and encouragement to actually go ahead, write and post it :) idk why a step like this is making me too anxious I wrote around 700 words but I'm writing too slowly in fear of not writing their characters right... or not getting it deep enough. What tips would you give new AO3 writers?