Line edit + marginal notes + editorial letter
I’ll read your manuscript once purely as a reader—no notes, no edits—and then double back to begin my editorial pass.
Why? Because I believe the experience your readers will enjoy bears only a passing resemblance to an editor’s inch-by-inch, stop-and-start progress through your book. Maybe some big-brained editors can pull it off, but I’m pretty certain that skipping right to analysis and prescription would blind me to larger structural issues, as well as to hitches in the story’s pacing and in maintaining what John Gardner calls its “vivid and continuous dream.”
Throughout the manuscript, you’ll get a record (via Microsoft Word’s “Track Changes” tool) of every question, observation, concern and idea that occurs to me during my second, much more analytical pass. I’ll also dive into the text itself and make every adjustment I think should be considered. “Track Changes” will be turned on, so you can simply hit “Reject” if a suggested edit doesn’t work for you.
When I’ve finished my editorial pass, I’ll compose an editorial letter of anywhere between five and (if I really get going) a dozen single-spaced pages containing my overall assessment of the book’s strengths, challenges, and unrealized opportunities.