Step 10: Inside each eye, draw a two short, curved lines for the irises. Inside each iris, draw a tiny circle off to the side for highlight and a dot in the middle for pupils. Between the eyes, draw two short, curved, vertical lines for the bridge of the baboon's nose. Add a few short, horizontal lines between the vertical lines for the wrinkles on the bridge of the nose. Shade the monkey's irises using a light value but don't overlap the tiny highlight circles.
Step 11: Draw the nose about halfway inside the small circle and close to the right edge. First draw two short, curved lines for the exterior part of the nose. Below those lines, draw two small, thin, oval-like shapes for the nostrils. Don't draw the baboon's nose too big. Add a line between the nostrils for extra detail. Draw a couple of sloping lines along the edge of the initial circle from the nose to the eyes for the top of the muzzle.
Step 12: Below the nose, draw a horizontal line for the mouth. Darken a bit of the right edge of the initial circle too. Don't make the baboon's mouth too long. The left tip of the mouth should not touch the edge of the initial circle. Follow the curvature of the initial circle and draw a short, curved line under the monkey's mouth for the chin.
Step 13: Draw a series of short strokes around the face for the edge of the fur. Draw a line made up of short strokes directly above the eyes for the furry brow. Curve the sides of the brow upward to emphasize its thickness. Add short strokes on the sides of the face. Use the initial lines and shapes as guides. Draw a curved line halfway on the side for an indentation on the bone structure. These strokes define the shape of the baboon's face. Keep the strokes close to the facial features for a thin face. Add a few strokes under the chin and a few more on the left side where the indentation is.
Step 14: Extend the strokes on the right side of the brow upward for the head. Draw a series of short strokes along the edge of the big circle to create the furry shape of the baboon's head. Draw the bottom edge of the head farther away from the initial circle for a bigger shape. Curve the bottom, middle part of the head up toward the chin. Keep the strokes short. If you make them too long, the monkey's fur will be shaggy. Draw the right side of the head farther from the circle too and curve the bottom part up toward the chin.