I made a flannelette wrap.. I made it a square of 112x112. We have all these bought wraps that are only 80cm and theyre just too small! You can fold the hems over and do them that way, or some fancy machines have an overlocking stitch. Mine has one of these, though its not really the same as a proper overlocking stitch. Maybe you could use a zig zag stitch instaed.