In Matt Dillon’s case, he would often look in the wrong direction. I would tell him that on the screen he would be looking in the right direction, even though it felt wrong when he was shooting it. Trying to explain this to a 14-year-old kid who was already suspicious about the whole thing wasn’t easy. So I’d put a $20 bill on my forehead, and I’d say, “Matt, if you look at this $20 bill, it’s yours when the shot is finished.” Over the course of the movie he made about $200.
There is more (too much more) here, and for the pointer I thank Hugo Lindgren.