When you’ve examine the segment over about metal foil stamping, the method will likely be easy to photo. During the stack of supplies: your cover on the bottom. Over it the (optional) foil and then the metallic stamp (die) by using a reversed Model of your type or design protruding. https://bookcoverdesign.food.blog/2024/11/10/maple-publication-bringing-authors-visions-to-life/