1. First draw two symmetrical, triangular and open pieces of paper, and then draw two circles on both sides, as shown in the following figure:

2. Then, after drawing the outline of the spread below, add the thickness of the drawn paper, as shown in the following figure:

3. After painting the spread in blue, turn the paper to the top and paint the circles on both sides in red and green, as shown in the following figure:

4. Finally, draw highlights on it with a white marker, thus designing a reading badge, as shown in the following figure: