How to make a 3D origami paper cup II

(page 9)

15th picture of 3D origami paper cup II

15.

First, apply (1) both "valley-fold" and "mountain-fold" of the step #14.

Prepare to apply (2) the "valley-fold" of the step #14.

16th picture of 3D origami paper cup II

16.

Apply (2) the "valley-fold" of the step #14.

Prepare to apply (3) both "valley-fold" and "mountain-fold" (4) followed by another "valley-fold" of the step #14.