Brew a strong cup of coffee and let it cool
Place the paper on a protected surface
Use a brush, sponge, or cloth to apply the coffee evenly or unevenly
Dab extra coffee on edges and corners for a more aged look
Crumple the paper slightly if you want a worn texture
Let the paper sit for a few minutes to absorb the stain
Blot excess liquid with a paper towel if needed
Dry the paper completely by air drying or using a low-heat setting
Repeat the staining process for a darker effect
Flatten the paper under a heavy book once dry if needed