okay now the cuff.
it needs to be twice the size of the opening of your stocking MINUS half an inch. by twice the size you want the cuff drop.
With that said
mine measures 15 1/2" x 6".
the picture here has the name in the top right corner. You need to sew the cuff together 6" side wrong sides.
Then flip it so it is right sides out and then fold it in half.