Mimistutz, when I made the cuff, I used a large piece of one of my fabrics (same one I used for the binding on the edges. Put right side of cuff fabric to right side of jacket and attach so that it looks like binding, then fold to inside. As I recall, I ran it about 4-5 inches up inside the sleeve. I'm sure there are others who could tell you how to do this better than I can. I sort of made it up as I went along, since I didn't really know how to do it.