Hi there and greetings from the Nexus' resident bum!
No one ever explained anything to me, so you should feel lucky.
I'd just lived in the Phorum forum for some time.
Always let others be the judge of your work. That way you can choose the ones you want to listen to.
Should never say things like 'not much of an artist' or 'can't draw worth 12 pesos' until you've seen my stuff.
For instance, one of the refference drawings I made for 3dsm:
See what I'm talkin about? Can't hold a pencil steady and can't even draw a straight with a ruler. Have faith in your stuff, it's good.