How to make an origami heart box

(page 23)

43th picture of origami heart box

43.

Unfold two inside reverse folds.

The model is in the same state of the step #39.

Prepare to rotate the model by 180 degrees.

Let's concentrate on the region of dotted circle.

44th picture of origami heart box

44.

Rotate the model by 180 degrees.

Prepare to apply two valley-folds of the right side (#1).

Make sure to merge two star points.