When you get around to editing, it's pretty important to keep an eye out for inconsistencies in your writing.
I'm talking about small things like the spelling of a name. Or a name changing for no reason in the middle of the story.
Or punctuation. Are you applying (or ignoring) grammatical rules consistently?
It sounds like a silly thing to do, but it's amazing how fast a reader can pick up the smallest change. They might not see it. They might not be able to put their finger on the problem, but something will yank them out of the story and make them wonder what changed.
So don't let something like a silly inconsistency damage the reading experience. It's so not worth it.
Look Out for These:
1) US vs UK spelling.
So which inconsistencies catch you every time? Which ones have caught you in the past?