It was hard to get  the piggybank surface to look like ceramic. I made many tests to obtain an acceptable result. 

This is one on the first attempts that I made to obtain an  appropriate texture.

The texture over the coins was more arduous than difficult.

 This is a shot with the final illumination setting of lights for the scene. I used  more than 15 lights.

It is one of the first attempts to get a functional illumination for the scene.