17.
Apply the mountain-fold of the step #16.
Prepare to rotate the origami heart flower model by 90 degrees.
18.
Rotate the origami heart flower model by 90 degrees.
Prepare to apply a mountain-fold and then a valley-fold.
Have you got a Brook in your little heart, Where bashful flowers blow, And blushing birds go down to drink, And shadows tremble so -- And nobody knows, so still it flows, That any brook is there, And yet your little draught of life Is daily drunken there -- Why, look out for the little brook in March, When the rivers overflow, And the snows come hurrying from the fills, And the bridges often go -- And later, in August it may be -- When the meadows parching lie, Beware, lest this little brook of life, Some burning noon go dry!