We saw this on the Sew Kind of Wonderful website. https://www.bloglovin.com/blog/post/4275983/3753915595
She has given great directions in her tutorial. I just warn you her directions are for an eight foot rack. It is huge!
My husband decided to make it for me as a wonderful gift for Christmas. And of course I had to get in there and put as many quilts as I had lying around up...even before it was anchored to the wall.