Baddha Konasana (or Tailor’s Pose) is one of the all time best yoga positions for the feet.
This version has us lying down with a belt, bolster and strap.
Just follow the picture from Pessi Feig, a great restorative Yoga teacher.
P.S If you don’t have a bolster, use a pillow, if you don’t have a belt, use a long scarf