How to make a closed oblong origami box (page 7)

 

11. Apply both two "valley-folds" and two "mountain-folds" just by compressing the model following two arrow directions of the step #10.   Prepare to apply four horizontal "mountain-folds" .

12. Apply four horizontal "mountain-folds" of the step #11.   Prepare to apply a vertical "valley-fold" .

 

 

 

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