Step 10: Darken the top part of the muzzle circle for the skin fold on top of the nose. Extend the right tip of the line to the bottom, right side of the head toward the droopy jowl. Extend the left tip of the skin fold down to the curved line on the lower, left side for the other jowl. On the right side of the nose, draw a line that curves downward for another crease on the muzzle. Draw a smaller line on the left side of the nose for another wrinkle. Add shorter lines below the nose too.
Step 11: Extend the left side of the line for the mouth down toward the jowl to close off the shape. Connect the left jowl to the right jowl using a wavy line to create the chin. Add a few curved lines between the bulldog's jowls for the creases on the chin. Use the initial muzzle circle as a guide to draw the small wrinkles on the chin.
Step 12: Draw a curved line across the top of the eye on the right to create the bulldog's droopy eyelid. Extend the sides of the line to create the corners of the eye and darken the bottom edge of the initial circle. Add a curved line on the bottom for a droopier eye. Do the same thing for the eye on the left but don't overlap the fold.
Step 13: Inside each eye, off to the side, draw a tiny circle for highlight. Darken the edges of the original circles but don't overlap the bulldog's droopy eyelids. Inside each eye, near the top, draw a small circle for the pupils. Don't overlap the highlight circles. Shade in the circles for pupils, leaving the highlights blank.
Step 14: Use the angled line on the upper, right side of the head as a guide to draw the bulldog's first ear. Follow the path of the guide but make the shape curvier as you darken the line. Draw a series of short strokes along the left side of the shape for the furry base of the ear. Add a few longer lines to the left of the shape for the ear's inner structure.