Draw the shirt collar, shoulders, sleeves, and then the other line for his shorts. When that is all done, you can then draw the lips for the pants pockets, and then his sneakers or boots. Now that you have all his clothes drawn out, you can add some finger lines for his clinched fists, and then draw out the mouth, one tooth, and the shapes of his eyes, and nose. Also, before you leave this step you will have to draw out his box top haircut, and then his ear.