How do I set up my design file for spot UV?

Spot UV is applied from a separate mask layer that marks exactly where the glossy coating lands, so that mask needs to be clean and precise.

• Create a separate UV mask layer in your file.
• Fill the areas you want coated with solid black (100% K).
• Leave everything else on the mask empty so no coating lands there.
• Keep the mask on its own layer, above your CMYK artwork.
• Start from a template with the mask layer already built in, and avoid hairline details that are hard to coat cleanly.