2. Wrap the schoolbag with paper, and then measure the size of the paper. The length and width of this paper exceed five centimeters of this book.
3. Wrap the schoolbag completely with paper to make all parts equal in size;
4. Cut off the paper whose two ends are longer than the spine, so that the paper just completely covers the spine and can be folded inward along the four horizontal edges of the book;
5. First, fold the paper inward along the horizontal or vertical edges of the book, four horizontal edges and two vertical edges;
6. Fold the four corners of the book cover inward along the edge of the book to form an isosceles right triangle, and one side of the triangle should coincide with the edge of the book;
7. Fold the paper inward along the edges of the four triangles, and the book cover completely covers the bag;
8, binding, it is best to put the book under the mattress at night, the next day will be very flat and beautiful. References:
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