Material preparation: a square colored cardboard.
Operating steps:
1, first of all, the corner is folded in half, and the crease is folded in half.
2, according to the crease inward into a triangle. Fold the two corners of the triangle.
3. Press the corner to fold into a square.
4. Fold the corners of the folded square upwards to form a triangle. Fold the sides of the two triangles in the middle.
5. Turn the paper over and fold it according to the above steps (step 3, step 4, step 5, step 5). Turn it over. Then fold it as shown below.
6. Fold the reverse side. Turn the paper over again. Fold the same. Don't forget a key step here. Remember to fold the bottom corner into a triangle and the other side into a triangle.
7, finally rolled up to complete.