Step 15: Add the detail of the forewing by drawing a few shapes at the top. Draw a couple of thin ovals along the edge of the monarch butterfly's wing. Then draw three more oval-like shapes toward the bottom. The shapes should be flat on the left side.
Step 16: Continue drawing the pattern on the lower half of the forewing. Below the oval-like shapes, draw two rectangular shapes. These should be partially covered by the butterfly's hindwing. On the left side, draw a sloping line to create a thin, long shape.
Step 17: Use the angled line under the body as a guide to draw the monarch butterfly's first leg. Draw the leg around the guide. Keep the shape of the leg thin.
Step 18: Use the other line under the body as a guide to draw the monarch's other leg the same way. Draw the shape of the leg around the guide. Keep the leg thin and make sure the tips of both legs are on the same level.
Step 19: Draw a series of short strokes along the guide in the middle to create the monarch butterfly's fuzzy thorax.