I almost feel bad calling this a DIY project since all it requires is a needle and thread. It's about as simple as it gets. The collar was taken from a vintage coat and the satin cord was the belt for a vintage dress. All I had to do was cut the belt in half then stitch the raw ends to the inside of the collar, right at the edge. One tip... for jobs like this I prefer to use a millinery needle. It makes it much easier to sew through the thick fabric. Once the satin cord is secure you can wear the collar over any coat or sweater. Voilà!