How to make a rectangular origami box III

(page 2)

1st picture of rectangular origami paper box III

01.

Let's start with a square paper.

Prepare to "mountain-fold" in half horizontally and then unfold.

2nd picture of rectangular origami paper box III

02.

Mountain-fold in half horizontally and then unfold.

Prepare to mountain-fold in half vertically and then unfold.