I was definitely a little bit nervous about line edits. I worried about what I might be asked to change, and if I was capable of making requested changes satisfactorily. Or what if the whole thing was so bad that the editor tells my publisher he should pull the plug?
Yes. My mind went there.
There are three types of editing as I understand it. Developmental editing, line editing,
and copy editing. Developmental editing is a process by which an editor
helps a writer along by providing feedback and possible solutions regarding big picture concepts like plot holes, character
development, and structure issues. Grammar isn't really a thing at this stage, and the point is to get the story and characters in good shape. Line edits, as the name suggests, is when an editor goes
line by line with an eye for dialogue, tense, tone, inconsistencies, style, flow, and word choice. Copy editing is a detailed look
at spelling, grammar, and punctuation. This would be the last type of editing before publication. I was super lucky
to have a very competent and knowledgeable editor who really took care of
line and copy together. I edited the hell out of my manuscript on my own for years. I read and re-read it, ripped it apart, put it back together, and rearranged it, some more. By
the time I went looking for a publisher it was pretty clean, but it still needed extensive editing.