I just went and took a look and it is awesome, so much talent on the board,
You need three different fabrics from what I understand, a dark a med and a light. I have yet to tackle them, I will have to see if they are in the remaining book that I have, the other one took a trip to BC without me, and I found the other one in my cleaning up the sewing room, so I can actually read it. If I am not mistaken they are in the OBW Encore book which I don't have, A little math though will go a long way in doing them.