Measure neck opening and then divide opening in quarters with pins. Cut ribbing 2/3 the neck measurement for snug fit a little bigger if going over the head is a problem. Sew ribbing into a tube or circle. Fold in half. I think I used to make the ribbing 2" wide. Divide ribbing into quarters with pins. Match pins on neck opening pin in place right sides together. Sewing with bib side up, sew ribbing to bib stretching ribbing to fit bib. Clear as mud I bet. Email me if you have further questions. Not hard at all once you do it.