These slip transfers have been created by Clae, influenced by the New Zealand landscrape.  They are designed to be applied to raw clay (green-ware).
 
To use, swipe the clay surface with water or slip, wait for the shine to disappear, and place transfer face down. Use a damp sponge to press the transfer onto the clay body (not too much water). Finally, remove the paper.
 
This design features three sized schist rocks.