The most important thing is that, when you work with somebody, you build a rapport with that person. They have a certain trust in you. You don't have to explain that much. It's very hard when you photograph someone who's a fresh face and then you don't work with them again for six months. All these people I work with over and over again have qualities that I love. There's something very free about them or there are some slight imperfections about them. I think the more you work with someone, the pictures get better and better.