How to apply a crimp-fold in origami (page 4)

 

05. Apply the valley-fold and then the mountain-fold of the step #4.   Prepare to apply a horizontal mountain-fold.

06. Apply the horizontal mountain-fold of the step #5.   You have just completed applying the 1st case of a crimp-fold.

 

 

 

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If you have a difficulty in these steps, you are welcome to write a question below.