Abstract acrylics - class one

Take small pcs of roofing material, take pcs of rectangular cut brown paper, place on base 1. not touching each other, 2. touching each other but not the border, 3. touching each other and the border. then paint 1. a very close-up cropped version of your fave of the above options, 2. any rectangle set up that you want to imagine.
This is my fave!