I edit myself (ahem - revise) pretty much as it comes out of my brain and down through my hand. That is, I write carefully the first time. I do have to fight SpaG problems - that requires some extra attention and calmness on my part.

Sometimes, when I'm finding it hard to get things clear, or I'm afraid it will disappear if I think too much, I write whole hog, maybe as much as a paragraph, then I go back and read it, think about it, --- and write it over from scratch, using the method outlined above.