Origami butterfly based on open-closed sink-fold (page 12)

 

21. Apply 90 degrees valley-fold of the step #20.   Prepare to apply mountain-fold and then valley-fold on both left and right wings.

22. Apply mountain and valley-folds on both left and right wings according to the step #21.   Congratulation!   You have completed making an origami butterfly based on "open-closed sink-fold"

 

 

 

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Now, you have completed making origami butterfly.