What are the steps to cut window grilles in my hometown for the New Year?

Illustration of steps for cutting window grilles:

1. Prepare a square piece of red paper.

Step 2 fold in half

Step 3 fold in half again

? 4. The third discount

5. The fourth discount

6. Draw the shape to be cut with strokes as shown in the figure, and cut along the drawn figure with scissors.

? 7. Effect after cutting

8. Open the cut window grilles, and the effect is as shown in the figure.