Pater specialised in the fête galante genre. His paintings often depict groups of figures in parkland settings or theatrical stages. Works such as Dancers in a Pavilion and The Guitarist show his focus on leisure and social interaction. He used a lighter palette than his mentor. His brushwork is quick and fluid. He frequently revisited seasonal themes, including his depictions of Spring and Summer. These compositions rely on soft light and careful figure placement.

Modern collectors value Pater for his ability to capture a sense of quiet escapism. His scenes provide a window into the idealised social life of the French Regency. The small scale of his figures makes these prints suitable for intimate interior spaces. His work provides a decorative element that avoids heavy religious or historical themes. These prints bring a soft atmosphere to a room through their pastel colours and balanced compositions.