OK, my guitarist teaches lessons for a living (in addition to our cover gigs) and he has started referring people who want to learn bass to me. I have had a few students before, and I think I've done a decent job, but we have never lasted more than a few months (either because I moved or they lost interesst). I know the basics of reading music and can teach it, I know how to show them to produce good tone, I know how to show them common scale patterns, and I can help people figure out their favorite songs. What else should I be doing to be a good teacher?