Slog commenter Enigma wants us to know that 826 National has just released a poster for wannabe authors to post on their wall. It's pretty simple: If you think you're done with your novel, you consult the poster. If your novel doesn't include elements that are listed on the poster, your novel is not yet ready for publication.
I've read lots of books that could have been improved by the existence of this poster. Thanks for the tip, Enigma.