This is based on a random drawing that I came across on the net. I do not know the name of the artist who drew it. The original reference picture is in included.
Blender + Cycles
Edit: If anyone knows who the artist of the origial drawing is please let me know so that I can credit him for the drawing.
Here is the clay tools scene that I built for the above image, If you want to set up similar surroundings for your digital sculpts. You can use it freely.