Every quilt teaches a lesson.  Sometimes the lesson is not revealed until the quilt is almost completed.  While creating "Rose Window", Cindy learned two valuable lessons. "1). If you are using black fabric, DO NOT use white poly batting. 2). Hand quilting with black thread on black fabric is not only impossible to see while doing it, it's impossible to see within the finished product."

Have you learned from a "mistake" quilt?  How has it helped you become a better quilt designer? Share your thoughts so that others can avoid some of those pitfalls.