Tip 6 of William Faulkner’s 7 Fiction Writing Tips

Don’t exhaust your imagination.

The only rule I have is to quit while it’s still hot. Never write yourself out. Always quit when it’s going good. Then it’s easier to take it up again. If you exhaust yourself, then you’ll get into a dead spell and you’ll have trouble with it.

Source: Open Culture 

Tip 4 of William Faulkner’s 7 Fiction Writing Tips

Know your characters well and the story will write itself.

I would say to get the character in your mind. Once he is in your mind, and he is right, and he’s true, then he does the work himself. All you need to do then is to trot along behind him and put down what he does and what he says. It’s the ingestion and then the gestation. You’ve got to know the character. You’ve got to believe in him. You’ve got to feel that he is alive, and then, of course, you will have to do a certain amount of picking and choosing among the possibilities of his action, so that his actions fit the character which you believe in. After that, the business of putting him down on paper is mechanical.

Source: Open Culture 

Rule 10 of Elmore Leonard’s 10 Writing Tips

Try to leave out the part that readers tend to skip.

A rule that came to mind in 1983. Think of what you skip reading a novel: thick paragraphs of prose you can see have too many words in them. What the writer is doing, he’s writing, perpetrating hooptedoodle, perhaps taking another shot at the weather, or has gone into the character’s head, and the reader either knows what the guy’s thinking or doesn’t care. I’ll bet you don’t skip dialogue.

My most important rule is one that sums up the 10.

If it sounds like writing, I rewrite it.

Source: New York Times

Rule 5 of Elmore Leonard’s 10 Rules for Writing

Elmore Leonard’s 5th Rule for Writing

Keep your exclamation points under control.

You are allowed no more than two or three per 100,000 words of prose. If you have the knack of playing with exclaimers the way Tom Wolfe does, you can throw them in by the handful.

Source: New York Times