Step 25: Use the small circle as a guide to draw Superman's clenched fist. First draw a U-shaped line at the top for the thumb that's going to be folded over the other fingers. Draw a series of curved lines on the right side for the knuckles. Inside the shape, draw a few more curved lines for the folded fingers. The fingers at the top will be behind the thumb, so only draw a few small lines to represent them.
Step 26: Use the shapes on the lower, left side as guides to draw the first leg. When you get down to the knee, make the shape thinner than the original circle. For the rest of Superman's leg, just basically darken the outer section of the guides to create the shape of it.
Step 27: Use a few long lines within the top shape of the leg for Superman's muscles. Add a few smaller lines near the middle to emphasize the kneecap protruding. The kneecap consists of two half-formed oval-like shapes on top of one another. Under the knee, draw two lines that have a V-shaped angle in the middle for the top part of the boot.
Step 28: Use the shapes on the lower, right side of the body as guides to draw Superman's other leg. Darken the outer edges of the guides to create the shape of the leg but draw some lines coming inward for the muscles. A portion of the foot will be behind the first leg, so don't overlap the lines.
Step 29: Draw a few lines within the shape of the leg at the top for Superman's muscles. Add a few shorter, thicker angled lines inside the initial circle for the bony kneecap. Use the lower edge of the initial circle as a guide to draw the top part of the boot.