Protect your workspace with a wipeable surface.
Take one of the two stretched canvases and spread white light texture paste over the entire surface using a painting spatula or palette knife.
Draw a pattern into the paste with an effect spatula of your choice. If the desired look is not immediately successful at the first attempt, the structure paste can quickly be smoothed out again for another try.
After you have created the first stretched canvas in this way, take the second stretched canvas, coat it with the structure paste and model the counterpart to the first relief with the effect putty. Both stretched canvases should now dry for approx. 24 hours.
Paint the dried stretched canvas with acrylic paint in black or gold. As soon as this paint has also dried, you can attach picture frame loops to the back of each stretcher frame and then hang the picture arrangement on the wall.