This book has value in inspiring intermediate and advanced students of traditional painting to define their own approaches to the creative process. This is not a book for beginning watercolorists, but then there are many other books intended to serve that purpose. In 128 pages, there are only about 7 paintings for which the painting process is shown from initial drawing to completed painting. The rest of the many painting illustrations are accompanied by anecdotes about the circumstances surrounding the creation of each painting. There is some analysis of what the artist intended for each painting in terms of composition, tonal values, use of color, etc. Castagnet also provides a lot of general commentary about his approach to various aspects of traditional painting or--as some might call it--illustration. Castagnet is a very talented watercolorist, similar to many of his best Australian contemporaries, with some signature use of texture and saturated color that sometimes borders on expressionism. Most of Castagnet's paintings are of city and seaport scenes, so the variety of subjects is limited. His paintings of interiors may be his most distinctive; I wish there were more examples of them. It's a pity that the artist has limited his subject matter to such a great extent. The inclusion of more figure studies, and perhaps even some comparatively abstract paintings, might have resulted in a more interestingly varied book.