1. Prepare a rectangular origami with the bottom edge folded upwards by about 1 cm.
2. Fold the origami in half, then open it and fold both sides towards the center line.
3. Fold the crease in the first line, and then fold it in the third line.
4. Unpack the origami, apply glue to the folded 1 cm, fold the paper in half and stick it tightly.
5. Fold the two corners in half along the right midline, then fold down along the bottom line of the small triangle, turn to the back, and fold the same.
6. Open the origami, fold it along the crease, glue it, and press it from the inside.
7. Fold the other end down twice, fix it with glue, and stick a decoration on the side.