1, 8*8cm square colored paper, as shown in the figure, folded in half.

2. Fold the upper and lower corners to the middle as shown in the figure.

3. Fold to the middle as shown.

4. Fold it into the picture.

5. Fold outward as shown.

6. Fold the other side in the same way, and make two.

7. Assemble two parts as shown in the figure.

8. As shown in the picture, four small triangles are glued together.

9, a * * * do 5 (you can do more and do less according to your own needs), and stick them together one by one (pictured).