I work on paper only and iterate drafts of jots, outlines, and mindmaps until I have all the main parts/ideas on a single page (ideally; sometimes 2–3 pages).

I work on paper only and iterate drafts of jots, outlines, and mindmaps until I have all the main parts/ideas on a single page (ideally; sometimes 2–3 pages). I do that until I can look at the entire thing at once; see that all the important parts are there and in the right order; see that no non-essential parts are present; and have it all make sense from a bird's eye view. Only once that's done do I move it over to the computer and finish working with it there.