I just purchased Maxine Rosenthal's One Block Wonder book and started reading it this morning. Now I consider myself an advanced quilter, but I am feeling a little intimidated by the instructions (specifically lining up the stack of fabric with pins). For those of you who have made an OBW do you have any lessons learned that you would like to share? I'm heading to Lancaster 4th of July weekend and planned to purchase my fabric.....but I don't know if I am ready for this.....