1. Fold the square paper into a "meter" crease.

2. Fold inward along the crease on the other side to get a double triangle.

3. Fold four corners in one direction and cut them into arcs with scissors.

4. Return to the double triangle state, and turn the two corners of the first layer upward toward the center line.

5. Fold the top corner backwards, beyond the bottom edge, then fold the excess part upwards, and then pinch the left and right sides upwards.