Born in the Dalarna region in central Sweden, known for its Dalarna Horse. In 1950, at the age of 22, he joined Rorstrand as a designer, and worked there for 21 years until 1971. As the company's signboard designer, he has created many works and has released the masterpiece Mon Amie series to the world. Monami is a masterpiece of Scandinavian design in the middle of the 20th century, called "mid-century", and even today, reprints are manufactured and loved all over the world. Westman's works are characterized by many bohemian designs and freehand drawings.