DIY Polymer Clay Pottery Barn Ceramic Skull Vase Knockoff Tutorial from 13 Black Cats Designs here. Left Photo: $109 per vase Pottery Barn Ceramic Skull Vase here (NA), Right Photo: DIY by 13 Black Cats Designs. This is the third Pottery Barn Skull Knockoff Vase tutorial I’ve posted. For ones using styrofoam skulls and craft foam go here: truebluemeandyou.tumblr.com/tagged/skull-vase P.S. This isn’t a fake Skull Vase DIY like the one I had to delete from my blogs.