Draw a light oval for the skull
Add a vertical centerline from top to bottom
Add a horizontal guideline across the middle (eye line)
Sketch a smaller guideline for the jaw/chin area below the eye line
Lightly block in the cheekbones using angled lines from the eye line toward the jaw
Define the jawline with two curves converging toward the chin
Draw the chin shape with a slight taper from the jaw
Place the brow line slightly above the eye line
Draw the eye sockets along the eye line (almond shapes)
Add the nose bridge from the brow line down toward the mid-face
Mark the nose tip and nostrils with simple shapes
Place the mouth line halfway between the nose base and chin
Draw the lips with a curved upper lip and a slightly fuller lower lip
Indicate the ears between the brow line and the base of the nose
Add the hairline on top of the skull (slightly above the brow line)
Refine the forehead slope and temples with smoother curves
Adjust proportions: eyes spaced about one eye-width apart
Erase construction lines lightly
Add planes and shading using simple light/dark areas (forehead, cheeks, jaw, under chin)
Strengthen outlines where form turns (jaw, cheek, brow ridge, nose edges)
Clean up the drawing and darken final lines