This book is fantastic if you have the perfect dress in mind, but can't find the perfect pattern for your needs. It gives clear instructions on how to alter a pattern block to produce all the designs you could want. I thought designing my own dress would be difficult, but this book shows you that there are a few simple rules to learn and once you have those, you can create just about anything. I definitely recommend this book. The only place that I would say it falls down is that some of the written explanations are unclear, but usually the diagrams make up for it.