It is true. You really do miss things by just trying to edit on screen.
Reading
Not only to read (you love books, otherwise you wouldn’t want to write them so this really is no chore) but to do so outside of genre and to include non-fiction. Stories are sparked from ideas. Ideas come from what you take in. See doing this as feeding your brain and your source of stories!
Resting Work
Put work aside before editing it and then sending it. You pick up more errors this way as you come to your story “fresh”.
Reading Work out loud
Read your stories out loud if possible. Even consider recording them via your PC. I do this for my radio scripts where the sound of words is almost as important as the words themselves. It’s also a great way of hearing for yourself whether your dialogue flows or if your words seem awkward, clunky.