Start in the middle

Writing a good novel: your idea that you had should probably be in the middle, not at the start. Everything else should radiate out from it. What if it were true? What else would be true? How can you pull the reader along so that the last thing they discover is your core idea?

The hunk of rock

I know I’ve given this advice several times, so I must have written it up in more detail somewhere, but this is the only version I could find online.
(Note to self: write it up in more detail and put it in here.)