Ilysa Bierer and Kira Slye with Polymer Clay TV demonstrate how to embellish wall decals with polymer clay. Wall decals come in a variety of styles. You can embellish wall decals in a variety of ways to make them your own. Take transfer paper and use parts of the design to incorporate into your polymer clay figures. Cookie cutters are handy ways to cut out polymer clay shapes. After you cut out your shapes with the cookie cutter, you can use the piece of clay with the negative space and place it on top of another design for a really cool look. Use fun tack to affix your polymer clay designs to the wall decal.