Step 10: Draw a curved line inside the tiger shark's head for the mouth. The mouth should start on the right edge of the first circle, then curve and end at bottom of the head. You can make the shark's mouth open slightly by adding a second line. Darken the bottom edge of the initial arc for the bottom of the head.

Step 11: Use the initial arc as a guide to draw the rest of the tiger shark's head. Simply darken the top edge of the arc to create the shape of the head.

Step 12: To the right of the eye, near the top of the head, draw a small drop-like shape for the nostril. Draw a curved line above the tiger shark's eye and nose to give the head more structure. Inside the first circle, near the left edge, draw five short, curved, vertical lines for the gills.

Step 13: Use the triangular shapes under the body, on the right side, as guides to draw the tiger shark's pectoral fins. Follow the path of the guides but curve the lines more as you darken them.

Step 14: Darken the initial shape for the tiger shark's dorsal fin on top of the body but make it slightly curvier. Draw the smaller second dorsal fin the same way. Darken the initial shape but curve it a bit more.