An extremely useful book. Everything is clearly explained, and in a logical order. Before reading this I had a few good classes with basics in composition, and learned painting from peers and practice. I sold originals, prints, and cards I designed, made ads for artist friends. This book allowed me to re-enforce what I had discovered, and go further. I suspect the book isn't magic, you need to be creative to do really good designs, but this book gives you the knowledge and inspiration to take off from. I used the lessons in this to design my science fiction book covers (listed on this site.) Book store managers and others deem them acceptable.