When I was a kid, one of my aunts bought me an art kit built around a similar principle. It came with several small sheets of glass that you would lay on top of little paint-by-numbers sheets. Then, you would paint the glass using the sheet under it as a guide.
When all the glass was painted, you would stack them in a special frame in order. The end product looked like a 3D object inside a block of glass.
Of course, since that side of my family is Catholic, the end product was a Virgin Mary in a block of glass. I ended up giving it back to her as a Christmas present. She was delighted. It was probably her master plan all along.
Jeriko-1 Oh. I was hoping at the end he was hinting at making a great dane sized koi illusion!