I look for material that both interest me and challenges me. If I am drawn to the material and I have to work hard at it, the characters and the plots reflect the hours and hours of research.
Before I got through high school I had attended 22 different schools. In the time before I was well acquainted with the latest school, I would amuse myself by drawing and found that I was pretty good at it.
I've always had an affinity for lawyers. My dad is a lawyer. He's retired now. My brother is a lawyer.