Shemalat is the god of judgment, and his central eye is representative of his watchfulness: these plaques are drilled into the inner-facing surface of prison doors to discourage escape.
On the left is a earthenware sculpted version of his eye (larger than on the original sculpture), being prepared for a plaster mold. On the right is the finished mold, which was poured directly onto the unfired clay and then scrubbed of the clay original. I made certain that the original had proper draft, so that casts (of wax) would not get stuck in the plaster detail.
Im not very experienced in sculpting with earth-clay, but it seems modeling experience with polymer clay helps a good deal - I still dont really like earth-clay, because of its pesky habit of drying up and its coarse texture, but it is by far the cheapest sort of clay so I might just have to get used to it.