Off to the bisque for these platters, bowls and cups
The white slab with the thin gray material is a plaster slab with a thinly pulled sheet of colored clay. Though it appears grey, it will be lavender when fired. This sheet of color clay can be cut and applied to the surface of the work. Its been a long journey filled with technical failure, but I've figured it out and the process if finally working for me.
Paper stencil-ing: Cut the positive or negative of a shape out of printer paper, stick it to the surface of the clay with water, apply slip, peel away to reveal a crisp shape.