His artistic approach relied on precise line work and a clear understanding of classical form. Works such as John Poines and The Purification of the Virgin demonstrate his skill in capturing the essence of historical subjects. Metz often produced studies of the Madonna and Child that focused on the human form instead of decorative elements. His drawings possess a sculptural quality that reflects his interest in the proportions of classical monuments.

These prints appeal to collectors who appreciate the technical discipline of the Neoclassical era. The monochrome nature of his sketches makes them suitable for contemporary homes. They provide a sense of historical continuity without the heaviness of oil paintings. His work captures religious and pastoral themes with academic rigour.