Easy as one, two, three.
ONE
Hold the Pin with the prongs facing you and sharp tips down. Gently insert and wiggle the Pin, allowing the sharp prongs to pierce the fabric.
TWO
Once pierced through the fabric and ticking, continue pushing the Pin into the box spring until you reach the bend in the L-shape prongs.
THREE
While holding the white crown of the Pin, further push the Pin using a scooping motion until it lies flat against the box spring.