I HIGHLY RECOMMEND YOU WATCH THIS!
Stephen Silver is an incredibly talented artist who not only can draw to no end, but has that rare ability to articulate his thoughts with words as well as his art.
Young artists should especially listen to this because its better to learn this now than 20 years from now only to realize that you have been burned out of thousands of dollars. (Like I did).
For those who haven't seen Stephen's blog ( I believe most have), go to stephensilver.blogspot.com. It puts the word inspiration back into inspirational.