Janellie, I used the Dear Jane software from EQ and the book. The book was more for reference for the actual quilting patterns though. I don't know about accuracy for the patterns as I didn't compare them to the "real" quilt as I went along. There are a few that needed some "tweaking" to make them easier to piece and I paper pieced as many as I could. Of course, making the quilt as a group really helped with any little issues as we all worked together to come up with solutions for the "hard to do" issues we ran across. I would highly recommend that if you want to make the quilt that you at least read through the threads on this board as you go...tons of help there and of course support!