I just did some for a friend. They were the stockings her children had grown up with and they did not want new. They are purchased, knitted with patterns on them. There was no way to use the cuffs because they had patterns on them. I made some embroidered patches with a border around the name. The fabric stitched on matched the base color of the stocking. I then trimmed the fabric to the border and used steam a seam to iron the "patch" to the stocking on the body where ther was a solid area. One stocking had a tear in the knitting and I used the patch to cover it.
I got a text message from her today telling me she loved them.