First of all draw a circle.
Now draw these lines it'll help you to locate the area to draw eyes, ears,nose and mouth.
Now start drawing Goku's face beneath the circle.
Now draw his eye's as u can ser in the picture above.
Now start drawing his nose and mouth. Draw his mouth at the end of the circle.
Now draw his hairs. As you can see in the picture above. He has 3 bangs hanging to the right side of his forehead and his hair also stand ups in the front with 4 spikes.
Now draw his Neck beneath the face.
Now draw his muscular chest.
Now draw his clothes.
Now start drawing outline and don't forget to add a new layer for it.