I am a Polymer Clay Artist. The examples are polymer clay and the description of techniques are common terms used in working with polymer clay.
texture sheets do not need a release agent when used with polymer clay. The soft edges are wonderful for impressing smaller areas or working repeats.
This is made from a open weave bamboo basket. The over-under weave is very distinct. Notice the detail, it is hard to believe this is just polymer clay pressed into a texture sheet with some brown paint.
Well to be more accurate, this is ivory colored polymer clay, with a burnt umber patina.