I would never contest the beauty of this book, but I found the lessons section to be lacking in terms of specificity. After all, this book is meant to be instructive. The instructions were often much too general for someone actually trying to learn floral design. Sometimes the generality is along the lines of 'put the twigs in the vase, put the roses in the vase,' while at other times it is more specific. In essence, the real process of placement is sometimes excluded.
Also, many of the arrangements are of a similar style, round and mouned, and though this is a particular style, I would have appreciated fewer examples of this type of bouquet, which I consider to be less complicated to make. As a florist, I would recommend this book to other florists looking for interesting ideas for using alternative floral materials such as food. I would also recommend this book for beginners needing very basic informatioin, such how to use greeneries and basic floral tools.
I would not, however, recommend this book for beginners or florists hoping to make commercial sorts of arrangements. After all, her book is the "art" of floral design, not the "economics" of floral design. Many commercial floral arrangements make more economical use of stem length and amount of flowers. This is not universal, but it is something to keep in mind when deciding who to buy this book for.