I found this link http://www.ehow.com/how_4601934_make...ow-topper.html
Heres another. http://www.offray.com/howto.html
Idk what shape of bow, maybe something like the one in this link...the pom pom bow. But of course with tails. I usually make more than one and then wire them together. I also add tails (4) streaming down. I always use wired edge ribbon so that it is easier to shape. I make the tails a lil curled ( just roll up the ribbon and pull it out from the center) Idk if this helps, hopefully it does. Im sure there are instructions somewhere...or maybe some else can show their way.