Yes, there are some limitations to what can be foil stamped. Foil stamping works best on smooth and flat surfaces. Materials with rough or textured surfaces may not be suitable for foil stamping. If they are, they often require a special grade of foil that is designed to be used on rough or textured surface. These special grade foils are only available in limited colours such as gold and silver. Additionally, very thin or delicate materials may not be able to withstand the heat and pressure of the foil stamping process. It's important to consult with a professional printer to determine if your desired material is suitable for foil stamping.