Thatīs incredible - the shadow and highlight shapes are *perfect*. It looks exactly like him, and very accurate to human anatomy. I am very impressed. What does it mean you used brush ? Does this mean paint/markers are included with the pencils you used to draw this?
I really feel like you just took a copy of this photo from online and put it in black and white. That's how amazing this is. All your art looks like that lol. If I had your skills I'd just drop out of high school. Or enter every art competition under the sun. Amazing job!