The steps to make a four-petal rosette are as follows:

1. Take out a square piece of colored paper, fold the sides and corners in half, and make a rice-shaped crease.

2. Polymerize along the folds to obtain a double triangle structure.

3. Fold the two corners upward to the top corner.

4. Turn it over and fold it in the same way.

5. Put your fingers in, stretch it out, and then flatten it.

6. Fold out a small square.

7. Fold the small square diagonally and fold the top corner downward.

8. Turn it over, fold the top two corners down and flatten it.

9. Fold the top corner downward.

10. Use your fingers to spread it open from behind.

11. Pinch the corner and start rotating with the other hand to get the curled rose.