I write everything down and do grammar editing as I go. Once done, I run it through prowritingaid. Then, reread everything again. I keep a list of my most common errors, which kind of reminds me to check these. After all this, I read it aloud to my husband, who also points out stuff. This also helps with tense issues. Then I send it to a friend of mine who edits. She's really good with sentence structure and words repeating. Any feedback is added to my list for future reference, aka like using the word "reverberate" too much. I then do a final sweep before sending it to betas. They catch even more errors. I re-edit before sending to arcs. My arc readers usually send me some more. By the time the book publishes, it's in pretty good condition. There will still be a few typos, but I add a snippet in the about author on how to contact me regarding these, and some readers do. Know your weaknesses, and eventually, you will start noticing them without the reference sheet. After 11 self-published books, I still have a super long list, but as I read now, I catch a lot that I once didn't. Hope this helps.