How to make an origami Batman's face

(page 10)

17th picture of origami Batman's face

17.

Apply two "valley-folds" of the step #16.

Prepare to apply two "mountain-folds" and then unfold.

18th picture of origami Batman's face

18.

Apply two "mountain-folds" of the step #17 and then unfold.

Prepare to apply a "petal-fold" .