What are the handicrafts made of a piece of paper?

There are boats, planes, paper cranes, flowers and so on. Take the paper crane as an example, as follows:

1. Fold a square piece of paper along the diagonal and centerline to form a rice noodle.

2. Fold the paper into a square according to the crease.

3. Fold one side of the bifurcated double square to the center line and align it.

4. The other three sides are operated in the same way, and they are all folded to the center line for alignment.

5. Turn the top corner along the sides of two triangles.

6. Unfold to form a crease as shown in the figure.

7. Fold the lower corner and press the crease in the middle.

8. Fold the four sides inward along the crease to form this shape.

9. Operate the back in the same way.

10, and then fold the four corners on both sides to the center point like this.

1 1. Switch four sides in pairs.

12. Fold the two corners on the lower side of the front and back respectively and align them with the corners on the upper side.

13. Then, the four sides on both sides are interchanged.

14. Pinch the top corners of the left and right sides and pull them down to form the wings of the paper crane. Pull the bulge in the middle. As shown in the figure.

15. Fold a small part of the top corner inward to form the head and mouth of the paper crane.