How to make an origami stealth aircraft (page 23)

 

43. Rotate the origami stealth model a little following the arrow direction of the step #42.   Prepare to apply a valley-fold to all four layers.

44. Apply the valley-fold of the step #43 to all four layers.   Prepare to rotate the origami stealth model back to the state of the step #42.

 

 

 

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