(A long but not exhaustive list of steps.)
Write idea. (Step is interspersed with more research and requires frequent doses of caffeine.)
Complete rough draft.
Yes, all of it, including the outlined fight scenes that are making you want to beat your own head in.
Find a good title, if the placeholder doesn’t fit anymore.
Edit draft. At least three major run-throughs.
Format book. Save a “base draft” to make corrections to as you inevitably find other typos/missing bits.
-For Paperback: Use a template made from previous books where you worked out all the finicky page sizing and headers.
Check all the line spacing is the same. (At least 1.1 point between lines looks good.)
Check the first line of each paragraph is indented 0.25”.
Adjust text lengths to fill each page, by breaking paragraphs if necessary.
Table of Contents if needed.
Index if needed.
Edit, check for page numbers, headers, overall “look”.
Write back cover blurb. Polish.
Acquire book cover.
Determine keywords for listing book.
Get Library of Congress Number.
-For Kindle: Format according to most recent specs. Use cover already acquired.
Submit completed books to Amazon, set price.
Get paperback copies – at least 2 for the Library of Congress.
Start work on editing the next book draft.
Start writing a new draft.