First of all draw a circle.
Now draw these lines it'll help you to locate the area to draw eyes, nose, ear and mouth.
Now start draw Itadori's face.
Now draw his eyes and ears.He has big eyes. And drae these two marks under his eyes. As u can see in the picture above.
Now draw his nose and mouth. Draw his mouth at the end of the circle.
Now start drawing his hair above the circle.he has rough looking spiky hairs.