How to make a four-pointed origami star (page 7)

 

11. As you push the corner up, bring the edges in towards the middle and flatten them.   You have made a so-called "balloon base" .   Prepare to apply the first "valley-fold" .

12. Apply the first "valley-fold" of the step #11.   Prepare to apply the second "valley-fold"

 

 

 

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