How to make an origami sunfish

(page 3)

3rd picture of origami sunfish

03.

Unfold the valley-fold of the step #2.

Prepare to apply a "closed sink-fold" .

You need to learn how to apply the "closed sink-fold" from the above link.

4th picture of origami sunfish

04.

Apply the "closed sink-fold" of the step #3.

Prepare to apply two "inside reverse-folds" .