Like other reviewers, I am disappointed by this book that, in terms of techniques, learn virtually nothing, except the first two pages that are present in all the books in the series, with the apparatus. Then it is only a series of different examples, but not very diverse, with different stages of construction to reach a mediocre result, moreover, as the drawings of the author are not themselves not very convincing ... No recommendations on the treatment of volumes, shadow and light, different filling techniques surfaces ... Copy and try for yourself, that's the only advice given during the book, also very brief. to avoid if you really want to progress.