Step 15: Use the line under the body, on the right, as a guide to draw the leg that's on this side. Follow the basic path of the guide and lightly sketch the shape of the leg around it. The leg should be thick at the top and thin at the bottom. Use curved lines to indicate the muscle structure. When you get the shape of the carnotaurus' leg right, darken the lines.
The middle section of the leg should be thick on the left and gradually thin as it slopes down to indicate the leg receding back. Use the three small lines at the bottom as guides to draw the toes. First draw a diamond-like shape at the tip for the claw. Then follow the basic path of the guide as you make the shape of the toe thicker. Draw the dinosaur's other toes the same way. Start with a diamond-like claw, then draw the toes around it.
Step 16: Use the short horizontal line inside the body as a guide to draw the carnotaurus' small vestigial forelimb. Simply make the shape of the arm thicker and add a few small, angled lines on the right for the claws.
Step 17: Use the remaining lines as guides to draw the rest of the carnotaurus' body. Simply darken the outer edges of the initial guides to create the shape of the body. As you darken the top part of the body, use a series of jagged lines to create a spiky ridge. Make the spikes different sizes. Add a couple of small lines on the neck to indicate a vein.
Step 18: Use the angled line under the body as a guide to draw the leg on the other side. Follow the basic path of the guide as you make the shape of the leg thicker. When you get the structure of the carnotaurus' leg right, darken the lines. The top part should be thicker than the bottom. Draw the claws on the tip of the toes using curved lines that come to a point. Only two of the claws should be visible from this angle. Darken the rest of the leg.
Step 19: Continue to draw the jagged line on top of the tail for the spiky ridge. Then darken the remaining lines to finish up the shape of the carnotaurus' tail.