Human body parts are very complex. So it is a little difficult to draw if you do not know the correct method. I've been drawing people's heads for a long time. I am sharing some parts of the practice.
If you draw a picture, you must have heard the perspective. Every object is seen in perspective.
Two types of perspective can be seen 1, linear perspective 2, aerial perspective.
I'm talking about linear perspectives.
Linear perspective is what is made up of lines. As you can see on the railways.
If you think of people's heads as a box, it will be easier for you to understand the perspective of the head.
Because the eye line, the nose line, the face line are made from perspective. The eye that is in front of it looks bigger because it is perspective.