1. First prepare a square red origami, fold it diagonally and then fold it in half.

2. Obliquely fold one corner of the origami, and then roll the origami.

3. Fold the past two corners in half and draw a tree-like pattern with a brush.

4. Cut along the drawn pattern with scissors and pay attention to the details.

5. After the cutting is unfolded, you can make a simple and beautiful paper-cut of window grilles.

Cut the tracery according to the following steps:

Preparation materials: paper, pen, scissors, etc.

The steps are as follows:

1. First, we align the long and short sides of colored paper to form a big triangle.

2. After that, we will cut off the right part.

3. After that, we fold an acute angle of 60 degrees above the diagonal by one third, and then we fold another acute angle by half.

4. After that, we will fold the origami once in the middle, and then we will cut off the top and cut out an arc.

5. Then we draw the texture of paper-cutting.

6. After that, we cut off the extra parts according to the lines drawn, as shown in the figure.

Finally, we can open the origami and cut out a window flower.

Fold the prepared colored paper in half left and right, then fold it in half three times in turn, draw the outline of window grilles on it with a pencil, then cut along the outline with a simple knife, hollow out the middle with a knife, and finally unfold the cut window grilles, and the simple and beautiful window grilles are finished.

1. First, we prepare a piece of red colored paper, fold it into a triangle from left to right, and then fold it in half.

Time.

2. Take out the prepared pencil and draw the outline of the window pattern on it. Draw symmetry from top to bottom.

3. Then cut it slowly along the drawn outline with scissors, leaving the drawn part, and hollowing it out with a knife in the middle.

4. Finally, slowly unfold the cut window grilles in turn, and a simple and beautiful window grilles is completed.