I just take 2 lengths of ribbon, 1 large and 1 small, and loop them back onto themselves. I take the small one and make a running stitch right up the middle and then add the large one (making a running stitch up the middle too). I usually wrap the thread around the "body" of the butterfly and then stitch it in place to keep it all held together tightly. I use beads and jewelry head pins to make the body. I glue the beads in place, like you were making a stick pin and cut off the excess wire (it will be at the bottom of the body), and hot glue the body in place.