Simple Planes Of The Face. See more ideas about planes of the face anatomy drawing anatomy for artists. And darkest as the form turns farthest from the light.
Light where the light source is brightest. Darker as the form starts to turn from the light. Follow the flattened side planes of the face to form a chin according to your desired jaw shape round square etc.
The pharyngeal and cervical areas the pterygomandibular space.
Here the jaw is dark because it turns back away from the light. These things fly to the far side of the gym and hit the back wall get the book. And darkest as the form turns farthest from the light. Practice facial geometry sculpt.