Draw a circle for the cranium
Add a vertical center line
Add a horizontal eye line
Mark the jawline below the circle
Connect the jaw to the sides of the circle
Shape the chin
Place the hairline above the eye line
Mark the brow line, nose line, and chin line
Draw the eyes on the eye line
Draw the nose between the eye line and chin line
Draw the mouth below the nose
Add the ears between the brow line and nose line
Refine the skull shape
Adjust the jaw and cheekbones
Add neck lines under the head
Clean up the guidelines
Add details and shading