Going through this rn too lol. I usually make a draft like I’m going to post it but then I save it to drafts. From there I read it through like I’ve posted it and if there are parts that I would think, oh I can make that better, I go back in and edit it. Putting it in the ao3 format like a pretend post usually makes it clear what parts I’m iffy about! Just remember to save it to your documents too because drafts disappear after a month :)
See I do this thing where I just posted anyway regardless of if it’s shit or not and then later, I’ll come back to it after I’ve moved past that plot point and fix it. At the end of the chapter though I’ll leave a little note and being like sorry this is just shit I couldn’t think of anything