While the famous Loomis method relies heavily on standard proportional spheres to idealize the human skull, Chen's method leans heavily into . He focuses on the mechanical rhythm of moving parts and capturing the distinct attitude, likeness, and expression of a character directly through their underlying framework.

Act as though the head is made of glass. Draw the back of the skull, the hidden side of the jaw, and the eye sockets that are turned away from the viewer. This ensures your perspective remains accurate.

This "living wireframe" allows artists to capture personality in the first five seconds of the sketch. This is why the method is described as —the drawings feel alive immediately, not like sterile mannequins.

: Place eyes, nose, and mouth relative to the structural landmarks, ensuring they "sit" correctly on the underlying skull forms.