I think the most important thing about coaching is that you have to have a sense of confidence about what you're doing.
The world knows of a vast stock of epic material scattered up and down the nations; sometimes its artistic value is as extraordinary as its archaeological interest, but not always.
If I started at 13, by the time I was 14 I was already good enough to play in front of people. I started off playing drums when I was 5, so playing in front of people didn't matter - not a problem.