Not (unfortunately) in an alcohol kind of way.
I said to my hubby "Have you got any plaster in the shed?".
He came back with a small bag (he had used the rest on our walls) and a cup of water.
The ingredients were mixed together until it looked like sludge.
Taking an artists trowel I slapped on some of this mixture over an old painting.
Before it set hard I used various "props" around the study to make patterns.
Then I used Redimix Tempera in gold, bronze, copper and silver to colour the canvas.
* Note to self : I must buy some proper Liquitex sculpting gel and not take plaster from the shed !