1. Prepare a square piece of paper.

2. Fold the paper in half.

3. Fold the creases in the above picture along the creases.

4. Fold the left part evenly, but be careful to change the other side when folding.

5. Open to both sides along the middle opening.

6. Fold the crease again, as shown in the figure below.

7. Fold the crease in the opposite direction.

8. Fold the edge portion inward along the crease.

9. Symmetric edges also operate in this way. It takes four times to do the same operation, and the face we see is folded.

10. Turn the folded model over.

1 1. Bend one of the sharp corners inward into the shape of a bird's head.

12. Fold the lower wing and unfold the paper crane.