Use the Asaro Head method in your studies. Breaking the face into distinct planes helps you understand where the light turns into shadow.

Before diving into stylization, you must master the "Big Six" of art. These are the non-negotiables for any portrait: Anatomy & Proportions

: Stylization is the art of simplification. Learn to see the face as a collection of large 2D and 3D shapes rather than complex details. 2. The Art of Stylization: How to Exaggerate