Hi Shrads ... welcome to posting at D&S.
You show a nice talent for art. There are a couple things I will point out for your consideration. First of all, turn the paper more when you draw. I think you have a tendency to keep the paper straight in front of you which can lead to some problems. For instance, notice his nose. The head is angled but the nose twists from between the eyes and goes perpendicular - just like the edge of the paper. The mouth follows the angle of the eyes enhancing the twist in the nose.
Secondly, make sure the irises are the same size. An easy way to do this is to get one eye the way you want it - in this case the left side eye. Then copy the sclera (white) triangle from the left side of the iris and then the right triangle. This should leave the iris in both eyes at about the same size as long as the opening is right.
Thirdly, when you are doing hair ... stroke direction will show. Be careful which direction you move the pencil. There are a few strokes here that go against the direction of hair growth and they tend to show.
Overall, however, you did a very nice job of this. It's not an easy angle to draw but you have given him volume showing you've been drawing for awhile. Keep on practicing and posting your work here. It always helps to have new eyes look at your work.