17.
Apply four "inside reverse-folds" of the step #16.
18.
Apply the valley-fold of the step #17.
Prepare to apply a "nail-fold" .
Click on the above link to study how to apply a nail-fold.
O, flower! Flower! How sweet your nectar is! You let me kiss you You feel so aglow! I sip your juice And you enjoy my caress! Let not your sweetness fade, But even if it would be I know it'll come again Some time, someday! Love busy bee!