A good book on self-editing will tell you not to do any editing until you have your first draft completed. Because writing and editing are two different mind sets, it's hard to concentrate on both at the same time, hence causing you not to do a complete or proper job of either process. So the right order is to write the first draft of your book first and then do your self-editing.
A thorough self-editing includes it all: grammar, punctuation, structure, dialog, point of view, interior monologue, beats, tributes, rhythm voice, and characterization. Are there any conflicting areas in your manuscripts? Do your characters sound and feel real? Do you have areas where you tell when you should be showing? Does your plot flow and have the ability to hold the readers' attention? And do you have a balance between your narrative and dialogue? I could probably think of some more points/questions you should ask yourself, but these are enough to give you an idea of the point to self-editing.
Now I know what you are thinking. But I have an editor to do my editing for me! That's true in most cases, but your book will be more polished if you edit your manuscript yourself first and then let an editor go over it again. A first-time author will sound less amateurish , and an experienced author will sound like the experienced writer he/she is..
Sound like a lot of work? You bet it is! But it could pay off in the long run.
Faye M. Tollison
Author of To Tell the Truth
Upcomng books: The Bible Murders