Step 1: Let's draw the top of the head. Draw half a rectangle with rounded corners. Make the right side squiggly.
Step 2: Connect both the ends with a curved line for the jaw.
Step 3: Now draw a single curved line starting from the left of the jaw and ending a little before the right side. This is the lips.
Step 4: Draw the eyes by drawing two circles on top of the head and joining them with a line from the top.
Step 5: Let's draw the nose. Draw two nostrils above the lips and take an oblique line upward to the middle of the eyes. Draw a curved line below the right eye to finish the nose.
Step 6: Next we draw the hair. Draw a rough squiggly outline of the head and make a loose mane down to both sides of the jaw. Connect the edges back to the jaw making pinted corners for the hair. Add zig-zag details and curvy lines to make the hair look real.
How to Draw a Baboon Face – Step-by-Step Tutorial