How to make an origami heart spring

(page 2)

1st picture of origami heart spring

01.

Let us start with a square paper.

Prepare to apply a horizontal "Z-fold" and then unfold.

2nd picture of origami heart spring

02.

Apply the horizontal "Z-fold" of the step #1 and then unfold.

Prepare to apply a vertical "Z-fold" and then unfold.