The end of the darning egg that’s shaped kind of like a foot is inside a sock heel, with the sock pulled around it to make a flat, smooth area that could be darned. My pinky beige hand is holding the sock around the handle so that it doesn’t flop around.
https://stockroom.wandering.shop/media_attachments/files/113/708/597/128/886/954/original/812884697cb65add.jpeg