I know I wrote a whole tip telling you to ease up on yourself and expect badness in your first draft. I encouraged you to just pound it out and leave the editing till later.
Sadly, that doesn’t work for every writer. Nor does it work for every book. Although I bashed out a crappy zero draft for the majority of my books, I wrote Liar editing as I went. I don’t think it would have worked to have written it any other way.
I wrote Liar scene by scene. Working on each one until it was polished and gleaming and then, and only then, moving on to the next one. The scenes in Liar are pretty short so it was easier to write that way than if they were longer regular chapters. (You can see an extract here. I talk a bit more about the writing of Liar here.)
The other approach to editing as you go is to start each new session by going over the last bit of the book you wrote. This is an especially good technique for those people who struggle to get going with their writing. Instead of beginning each new session with the scary blankness of what is not yet written, you begin with the comfort of words already on the page. Go over the last couple of chapters, fix what needs fixing from typos on up, reacquaint yourself with your characters and story, and write from there. By the time the draft is finished you’ll have gone over the majority of the novel two or three times and your novel will be in much better shape than if you’d just banged the whole thing out with nary a glance backwards.
Not that there’s anything wrong with that approach. Like I said I’ve written many novels that way.
You’re now more than half way through NaNoWriMo. Congratulations! And good luck for the next 14 days!