I printed out the labels on cardstock. Then I put clear packing tape over them to laminate them. Then I cut them out. Then I ran them through a xyron sticker maker to put adhesive on the back of the labels. Then I stuck them on the jars. I like to seal around the label edges with some glitter fabric paint. On some I used glue around the label and sprinkled on some embellishments. These jars are frightening, especially under the eerie glow of the "cow candle".
I filled them with scary candy. Kids that came trick-or-treating were afraid of the jars, so I had to take the candy out and give it to them.