Fill the sock with enough stuffing to give it a good, filled out shape - You want to have a convincingly shaped "foot" inside the shoe!

Place the bone inside the sock, leaving at least 6" to 8" of its length sticking out of the top, or longer if you have a larger bone. Fill in the space around it with stuffing, and allow a small amount of the stuffing to protrude out of the top.

Then put your sock and bone into the shoe.