How to make a closed square origami box II

(page 5)

7th picture of closed square origami paper box II

07.

Apply four vertical valley-folds of the step #6 and then unfold.

Now, you have completed making a "8x8 matrix base" .

Prepare to turn the paper over.

8th picture of closed square origami paper box II

08.

Turn the paper over.

Prepare to apply a horizontal "valley-fold" .