Okay y'all, I brought some fabric to try my at at this but I am confused. What size do I need to cut the fabric to start? I saw 12'' by 2.5 yds and I saw 3.5 yds and I saw 9''. So someone please help me out. I also saw someone cutting it in the corner. That confuses me. If I can start with a pattern from somewhere it would be helpful for me. Thanks a bunch, Sandi