Tool preparation: A4 white paper, scissors, pencil and ruler.

Steps:

1. Fold the left and right sides of A4 paper in half respectively with a ruler 1/3, so that A4 paper becomes three folds.

2. Fold A4 paper down 3-4cm. These areas are filled with your future information such as book title, author and recommendation. If you want a larger filling area, you can increase the folding distance.

3. Now turn the A4 paper upside down, and fold the lower four corners slightly inward, so that it becomes a triangular area with a protruding middle.

4. Next, you can fill in the information such as book recommendation in the reserved area in front, and then fold the whole card in half to complete the production.