A few years back I crafted a leather mask for a costume party. I didn’t start from scratch though, A friend and I picked up a Mardi Gras-style mask from a Halloween store, and after taping it up, we filled it with plaster to create a mold. I used about 2 ounce vegi-tanned leather, soaking it in warm water to make it pliable for shaping around the form. After several hours of working with the leather as it dried through various stages, I was mostly satisfied and left it to dry completely.
When I returned, I trimmed the edges and the eye holes before sketching the design with a stylus and wetting the areas for tooling. Once that was complete and dry, I painted it with Eco-Flo Cova Color, a water-based leather paint, and sealed it with a clear coat. I added a little elastic cord for the strap, and it was ready to wear!