Sorry for the delay in responding to comments. I’ve been a busy girl! I’m going to pull some of the questions posed in comments to my last post up top to respond to them, though, for the benefit of those reading through a blog aggregator.
Are there preferred margins for copyediting? What about lines per page?
Standard manuscript format should result in about ten words per line and twenty-five lines per page. Margins should be at least one inch all the way around, but a wider right margin (at least 1.25 inches) allows more adequate room for queries. As noted in the comments, text should also always be set RAGGED RIGHT. When you justify your text, it makes it difficult for the copyeditor to tell if there are extra spaces that need to be deleted.