How to make a wide rectangular origami box

(page 2)

1st picture of wide rectangular origami paper box

01.

Let us start with the back side of the paper facing up.

Prepare to apply a diagonal "valley-fold" and then unfold.

2nd picture of wide rectangular origami paper box

02.

Apply the diagonal "valley-fold" of the step #1 and then unfold.

Prepare to apply diagonal "valley-fold" and then unfold.