How to make an origami airplane (fighter jet plane) (page 19)

 

35. Unfold the valley-fold of the step #33.   Prepare to apply an "open sink-fold" on the crease line you have just created.   If you don't know what "open sink-fold" is, click on the above link to study it throughly.

36. Apply the "open sink-fold" of the step #35.   Prepare to apply a vertical valley-fold.

 

 

 

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