1. First, take a square piece of colored paper.

2. Fold it up and down, and then fold it left and right.

3. Then unfold it and a cross fold will appear.

4. Fold diagonally, align and flatten.

5. Expand, as shown in the figure.

6. Fold the bottom part upward at a right angle, as shown in the picture.

7. Then fold upward along the diagonal line.

8. Unfold and fold the left and right corners inwards.

9. The simple lazy bookmark is ready, give it a try.