after seeing this, i really wanted to give this pattern a try!
i crocheted the top to fit a 16" pillow form. i had to rip rows out a few times trying to make the circle lie flat, but i finally got it right! i decided that i didn't want to crochet the back, so i cut a fabric circle 19" in diameter. i wanted to hem the edge of the circle to make a 1/2" hem, so i folded the edges in 1/2" and then another 1/2". i was then left with an extra inch to accommodate the curve of the pillow form(does this make any sense???)
then i did a blanket stitch around the perimeter of the circle at 1/2" intervals. this way i had something to crochet into to attach the front and back together.
i did one row of single crochet to attach the front to the back. when i was about two thirds of the way around, i stuck in the pillow form and then finished the row of single crochet with the form inside.
no one in this house is allowed to touch it!