Preparation material: square colored paper.

1. Take out the colored paper and fold it into a triangle, as shown in the figure.

2. As shown in the figure, fold the triangle in half again.

3. Unfold and fold the right corner to the middle crease, as shown in the figure.

4. Unfold, and fold the right corner to the crease in step 3 again, as shown in the figure.

5. Spread and fold the right corner along the crease, as shown in the figure.

6. Fold the left corner in the same way.

7. Fold the extra corners on both sides inward as shown in the figure.

8. Fold the two corners together to form a triangle, as shown in the figure.

9. Fold the corners from the inside out as shown in the figure.

10, forming the following figure.

1 1, folded twice to form two creases, as shown in the figure.

12. Fold this corner along the crease.

13. Fold the corners on both sides as shown in the figure.

14. Spread the corners on both sides, and then fold the middle corner to the top, paying attention to leaving a little below, as shown in the figure.

15. Fold the remaining paper flat as shown in the figure.

16, done.