The first thing I did was buy an old wool sweater from the local used clothing store. It had seen much better days but was perfect for this project. Using a Dollar Store stocking as a template (which can be used over and over again) I used a marker to outline the stocking about 1/2 inch away from the edge. This will allow you plenty of room for your seam while stitching it.
Now turn your stocking so that both sides that are the "pretty" sides face each other. Using the edge of the sewing machine "foot" as a guide, stitch the two pieces together using the regular setting. Just remember not to stitch up the top hole! Hahahah.....that could be the naughty stocking version. No presents for you!