Tools/raw materials:
Square colored paper
scissors
1. Prepare a square colored paper and fold it in half from top to bottom, left and right.
2. Unfolding: the upper two corners are aligned with the midpoint to fold, and the upper sharp corners are aligned with the midpoint of the lower side to fold.
3. Fold a triangle at two corners, turn it over, and fold the upper two corners at the midpoint below.
4. Turn it over, lift the diamond surface, fold four layers inward and outward, and fold the left and right corners inward at the waist.
5. Fold the two small triangles on the surface into a trapezoid with three creases in the middle.
6. Finally, fold the left and right sharp corners inward and outward.