What editors do
An editor can:
act as an impartial first reader before you launch your words on the world
structure your documents logically
choose the right style and language
help you use illustrations to advantage
remove ambiguity and clarify your meaning
correct grammar and spelling
simplify obscure language and bureaucratic, technical or specialist jargon
help you get straight to the point
ensure consistency in style and language
help you manage large communication projects
make your novel more appealing to an agent or a publisher.