If however the editor is going to disassemble the book act by act, scene by scene, beat by beat, and show technically in story structure terms what needs to be changed, then the editor is spending far more time in analysis and constructing the demonstration of such to the client. Of course, this really depends on what service a client wants as well.

About 25% of my (fiction) editing work is direct with authors, and the rest is split between two publishers. It my be of interest to note that these rates are close to what publishers pay their editors. That is to say, if you, as an author, were to traditionally publish your book, you would be paying this amount via royalties. Creating a professional product via self-publishing is not cheap, the costs (and income!) just shift from the publisher to the author.

Lots of authors I know have a hard time finding an editor because they feel that they want to “know” their editor. This is understandable when you’re entering into a developmental relationship, but copyediting and proofreading are much more technical skills. The best copyeditors and proofreaders I know are freelancers who are hard to find because they’re working for publishing houses, and the only people who have access to them are companies and/or individuals with stables of editors they’ve cultivated over years in the industry. If you find a service (or individual) you trust with access to a stable of editors, be open to being assigned to one. Ask about the individual’s qualifications, and what other books they’ve edited, but let the trial edit be the deciding factor rather than any connection you hoped to have between yourself and your editor.
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Obviously there is a big difference. I actually started with screenplays (with some mild success) partly due to hearing that as long as you have a good story, the grammatical errors won’t be a big deal. Well, that was not true. Maybe if a producer liked the story or I was already established but every contest I entered always came back with feedback about the grammatical errors. Even if I won or placed as a finalist, I always received critique on that. Very little is spelling error, it was more about structure, etc.
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