1. Prepare a square piece of black and white paper, and fold it diagonally to make a crease.

2. Fold the lower corner up and down twice.

3. Turn it over, align both sides with the bottom centerline, fold the triangle on the other side up and press it in.

4. Fold down both sides and align the two bottom corners to fold up.

5. When the surface layer is unfolded and folded, the two sharp corners are unfolded and folded, and the surface layer is unfolded and the three corners are folded inward to look like eyes.

6. The small triangle in the middle is also folded outward.

7. Fold the triangle below upward, fold it into a tooth shape inward and outward, and fold both sides inward, and a skull will be folded.