I try really hard, even if there’s a minor character, to hear their memorable lines. They really do float over your head when you’re writing them, like ghosts or living people. I don’t describe them very much, just broad strokes. You don’t know necessarily how tall they are, because I don’t want to force the reader into seeing what I see. It’s like listening to the radio as a kid. I had to help, as a listener, put in all of the details. It said “blue,” and I had to figure out what shade. Or if they said it was one way, I had to see it. It’s a participatory thing.