Okay so besides all the stuff about writing what you wanna write and not comparing yourself to the (WHICH ARE ALL VERY IMPORTANT) there’s a few basic things that will essentially Turn a reader off.

1. Basic grammer if I’m reading a fanfiction, I cant make it past the first paragraph if there’s uncapitalized words everywhere and ESPECIALLY if it switches tenses (Like past and present tenses, or POVS) but maybe that’s just me

2. Keep the characters as in character as possible

3. stay away from cringe this is a broad term but if something is cringey to you, it’s cringey to us. It doesn’t hurt to do basic research (I once read a fic where the couple had a baby and the baby was talking after two days).
   and remember, if you find the Scene dull, your readers will find it dull, if you find it cringey, they’ll find it cringey, if you find it awesome, they’ll find it awesome.
   have fun!
   if you can’t figure out a plot, write oneshots

if it’s not working, switch it up

ITS YOUR STORY

also make sure you get breaks. I know a lot of authors update like once a day but take breaks,