How to fold the schoolbag?

The schoolbag folding tutorial is as follows:

Fold a square piece of paper into two diagonal lines, select two diagonal lines, align them with the center point, leave a crease and open them. Then align the tips of the two corners with the creases of the previous step, fold, leave creases and open. At this time, there are many parallel creases on the paper. Rotate the paper by 90 degrees so that the parallel lines are vertical, fold the paper along the transverse diagonal, then fold the edge of the paper at the folding place by a distance of about 1 cm, and then fold the creases drawn in the corner alignment diagram at both sides to the middle.

After the crease is left, open the flat paper, align the corners of both sides with the intersection point drawn in the picture, fold the paper outward, and then fold the upper and lower paper layers back according to the crease.

Press down the inner crease to make the paper stand up, then fold the oblique crease inward, and then compact it according to other creases, and do the same operation on the other side. Fold the obtained paper layer inward into a crease at a suitable position, stick it on the inside with a glue stick, and do the same operation on the other side to fold a small square box, which is the main body of the schoolbag.

Take half of the square paper, horizontally surround the upper paper edge of the small box, determine the folding width of the paper, and stick it with a glue stick, which is the cover of the schoolbag. One end of the adhesive cover is sleeved on the protruding paper edge of the square box, and the other end is buckled on the other side of the square box. After finding the right position, trim the right angles on both sides of the lid into an arc with scissors and stick it outside the square box.

Cut the remaining half of the paper into a proper width, fold it into paper strips, knead it with your fingers and bend it into the shape as shown in the figure, and glue the two ends above the schoolbag with glue sticks; Cut the remaining paper to a suitable width in the longitudinal direction, cut it into two pieces, fold it into paper strips respectively, knead and bend it into a schoolbag belt, and stick it on the shorter side of the cover respectively, so that a schoolbag can be folded.