How to make a flat rectangular origami box

(page 5)

7th picture of flat rectangular origami paper box

07.

Apply the CP of the step #6.

Prepare to apply a 90 degrees valley-fold.

8th picture of flat rectangular origami paper box

08.

Start applying the 90 degrees valley-fold of the step #7.

1 2 3 4 5 6 7 8 9 10

11

If you have a difficulty in these steps, you are welcome to write a question below.