requirements for creating a painting this way. A plaster surface is prepared
before the paint is applied. The wet plaster can dry in 3 hours. The painting can only be worked on as long is the plaster is still wet. After that, you're unable to make any changes. You have to be thoroughly prepared in advance with a sketch of the scene you're going to use. To make this easier to do, the picture can be split up so that only one a section at a time has the wet plaster to which paint is applied. As remaining sections are added, their colors at wet stage have to be carefully blended with the colors of the previously dried sections.