In 1976 he decided to pursue fine art as a vocation. Acquiring instruction and information full-time, he had his first solo show six months later, and sold out.

Wren loves the freedom to create and to do as he pleases while communicating the beauty of life to others. Creating art gives him the opportunity to examine the visual world with sensual intensity. Most of his work is en plein air in the classic tradition of the French Impressionists. Each painting is begun and almost completed in a quick burst of activity, and the subtle refinements are added slowly from memory. Wren hopes that his work will convey to the viewer an optimistic ssense of beauty and pleasure.

His work has been shown in over 20 solo exhibitions and many group shows in galleries and museums throughout the U.S. and France.