Hope you can just print these off and work on them when you can.
Nothing is new under the sun.
This saying was probably old when King Solomon uttered it. Human and animal figures in the surprisingly varied and realistic murals of the Cretan civilization were executed in the form of plaster reliefs, then painted in bright, unshaded colors. The relief created its own shadows when the light hit those murals from one side or another. In the Early Christian era, halos, crowns, crosses, gold ornaments on holy and royal or imperial personages, were often carved into the wood panel on which the painting was done. Such three dimensional decorations were covered with gold leaf, while the rest of the picture was painted very smoothly.