How to cut the window grilles?

The method of cutting window grilles is as follows:

Preparation materials: origami, scissors and pencils.

1. Square origami is folded in half diagonally.

2. Fold in half along the center line again.

3. Unfold the origami and fold it to 1/3.

4. Fold the other half in half.

5. Fold it again along the middle line.

6. Draw the shape of window grilles on it with a pencil.

7. Cut along the handwriting with scissors.

8. Flatten the origami.

9. Paper-cutting of window grilles is finished.