How to make a four-pointed seashell origami star (page 9)

 

15. First, make sure that the open side is at the lower half,   Prepare for two valley-folds.   The sequence of steps #15-22 is called "petal-fold" .

16. Apply two valley-folds of the step #15.   Prepare to apply another valley-fold.

 

 

 

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