Well
Not trying to be harsh but it looks like this took you a few minutes, that's why it's getting zeros, but it doesn't deserve a total zero, but it doesn't deserve to high.
The shading doesn't go very naturally it's just kinda outlining one side, the hands especially the one behind him should have more shading on the side facing us. The major problem and I see this a lot, is the hair and the hat, the hat past the line in the middle, to the left of that line, should be completely shaded, not like the first half, it looks more like a door than a hat. the hair has the opposite problem, the hair has almost no shading in the back.
4/10
2/5