How does anybody change from the time that they're 18 till they're 25? Everything kind of changes. You see the world much differently, and you get your priorities in order a little bit more.
I don't have a checklist. Whatever material excites me, they'll call for a certain genre or combination of genres. It'll come naturally and I'll be eager to learn how that thing works. I learn the rules, and I'll probably break some of them.