Whether you’re just starting out, or you’ve been writing for some time, it’s no secret that the most successful writers specialize in a niche. Why? Focusing on a niche helps you become an expert in that area, write better content, ask better questions, and know where to find sources and research. The best editors typically specialize in one or a few niches for similar reasons.
It’s always sensible to follow due diligence in submitting your first draft of your book to an editor by making as fool-proof a copy as possible for you because first, it is your own creation, and secondly, a horrid draft sent your editor can end up frustrating both you and him or her. Make your own corrections to the extent you can, so that will make the job of your editor that much lighter and the end result would be a lot more effective.