I was always a computer vector / sumi-brush man
I could never master shading by means of pencil or charcoal.
It takes real delicate finger-tips to be able to dedicate control when it comes to the shading of objects and animals.
What's your skills with the brush I wonder? Ever attempted the ancient Japanese way? I did - and it really bothered me whenever I messed up.
I find the greatest thing in an artist is - Versatility.
I see allot of computer generated work. And it's work like this that proves to me that there is more to you than what can be produced through a vector program.
You should submit pictures of portraits you've painted or even sculptures.
Work by Graphite, Zero's n One's, Paint, and Clay - the versatility of an artist proves her value and talents to herself.