How to make a closed square origami box IV

(page 17)

31th picture of closed square origami paper box IV

31.

Apply the 1st "valley-fold" of the step #30.

Prepare to apply the 2nd "valley-fold" .

32th picture of closed square origami paper box IV

32.

Apply the 2nd "valley-fold" of the step #31.

Prepare to apply the 3rd "valley-fold" .