How to make a heart origami envelope (page 9)

 

15. Keep applying two "swivel-folds" of the step #12.

16. Complete applying two "swivel-folds" of the step #12.   Prepare to apply the crease pattern (CP) on the left.

 

 

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18