1. Prepare a square piece of cardboard. It must be square paper, and the paper should not be too soft, otherwise it will be difficult to form.

2. Fold the square paper pair into a triangle and then into a small triangle. Be sure to press out the crease in this step. The next step is to rely on folds.

3. You will see two obvious creases after opening. Take out the scissors and cut them inside according to the crease. The distance from the center is one centimeter, not the center of the scissors.

4. Stick it on the center point with a glue stick. You can apply more here to avoid it.

5. Pick up the corner and stick it on the center point. Be sure to stick it tightly, and all four corners should stick to the center point in turn.

6. In this way, the windmill is finished.