As an actor, you are sort of only in charge of yourself. All you can really control is your performance. You don't know what they're going to do with it in the editing room, what they're going to cut out, which take they're going to use. You know, your control is very limited. As a director, it's ultimately your piece. You have a lot more responsibility, but you also have a lot more creative control. It's scary, but also liberating in a way.