You’ve got a book manuscript, fiction or nonfiction, or a general business/marketing document, or web content, or another document. You’ve slaved over it. You’ve combed through it multiple times. But you know it needs help before it’s ready for prime time. In the case of authors—ready to be self-published or ready to give to an agent or publisher or even a movie/tv producer. In the case of other writers—ready  for any  audience expecting top quality, readable, understandable information from you.