Here are some observations from watching a master…
1. They make it fun–even the scales.
2. They focus on the love/passion behind the music, rather than just playing.
3. They stress the importance of practicing.
4. They introduce new waves of the future into the lesson–computer music etc., to keep it interesting.
5. Best private teachers are very good players.
6. They have rules and stick to them. (Being punctual is a life lesson).