I ran into this at a class I took, the pattern was not available for purchase so we had to use the teacher's pattern. She had copied the back of the pattern with the supplies and fabric we would need and I received that as the supply list before the day of the class so at least I was ready with the fabric needed, or at least I thought. The instructor admitted she had never followed the pattern and when we started to follow the instructions, guess what, the fabric requirements listed on the back of the pattern were wrong. Fortunately I had brought extra fabric, and made lots of notes. I didn't buy the pattern when it came in.