Draw an oval shape for the cranium
Add a jawline beneath the oval
Mark a horizontal guideline across the middle
Mark a vertical guideline down the center
Draw two large eye sockets
Add a small triangular nose cavity
Sketch the cheekbones on both sides
Shape the upper and lower edges of the jaw
Draw the teeth line across the mouth area
Add individual teeth if desired
Refine the skull outline
Erase unnecessary guidelines
Add shading to the eye sockets, nose cavity, and under the cheekbones