Ryan Neil from Bonsai Mirai has a really wonderful Interview with Bill Valavanis. I highly recommend watching and listening very close. Bill Valavanis is an International known American Bonsai Master. I recommend down loading the video to your hard drive and then watching the video on a player where you can turn up the sound.  I was having trouble hearing Bill speaking. I have added the video to Bill Valavanis Bio page, listed under Bonsai Masters and Bonsai Basics.