His approach balanced the study of nature with the rules of the antique. Unlike contemporaries who pursued abstract idealism, Girard maintained a sense of physical reality in his figures. His work features clear outlines and a structured sense of space. In pieces like La Mère Heureuse, he applies neo-classical composition to domestic themes. He avoids the stiff formality of academic art. Instead, he uses precise draughtsmanship to convey quiet, human moments.

Modern collectors value Girard for his technical clarity. His engravings after Pierre-Paul Prud'hon demonstrate a command of tone and shadow that remains visually striking. These prints offer historical continuity without appearing ornate. The clean lines of his compositions suit contemporary spaces that require art with a strong graphic presence. His work provides a connection to the French neo-classical tradition through a lens of naturalism.