From the USPS press release November 15, 2024:

This is the sixth stamp in the current Lunar New Year series, where each entry features a mask, calling to mind the decorated masks used in the dragon or lion dances often performed during Lunar New Year parades. For Year of the Snake, designer Camille Chew constructed a three-dimensional snake mask out of hand- printed paper, then cut, scored and folded it into shape. After the front was embellished with acrylic paint and additional paper elements, the back was covered with a layer of papier-mâché. Antonio Alcalá, an art director for USPS, designed the stamp from a photograph of the mask by Sally Andersen-Bruce.