Well, I went ahead and ordered 6 yards. I know I'll lose a lot in seams...I don't even have a plan for how big I want this quilt to be! LOL I just want to use the technique! I'm hoping 6 yards will give me at least a nice lap size, I'll be adding an extra border or two as well. Based on the reply from the woman above who has this fabric, my repeat will be 18", which means I need 3yards to get 6 repeats...Hopefully I'm safe!