First of all draw a circle.
Now draw these lines it'll help you to locate the area to draw eyes, nose, and mouth.
Now start drawing Akira's face beneath the circle.
Now draw his eyes. He has small and sharp looking eyes.
Now draw hai Mouth and nose. Draw his Mouth at the end of circle.
Now draw his hair. He has messy and rough looking hair. Which are falling down from above of his eyes. As you can see in the picture above.
Now draw his neck by drawing this two lines. And draw his ears and hair behind the neck.