How to make a flat open-square origami box

(page 3)

3rd picture of flat open-square origami paper box

03.

Apply the vertical mountain-fold of the step #2 and then unfold.

Prepare to apply a horizontal "gate-fold" and then unfold.

4th picture of flat open-square origami paper box

04.

Apply the horizontal "gate-fold" of the step #3 and then unfold.

Prepare to apply a vertical "gate-fold" and then unfold.

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