The background was mostly red, yellow-orange, and pale blue paint sprays over stencils. Then we added more stenciled shapes using acrylic paints. Then we added the stenciled waves with black paint, and also added the yellow-orange circles using round foam stamps. A cardboard tube was used to add the white rings with acrylic paint. Then I drew on this cross-hatched designs, and we stamped on the black circles with text in them and a few other small details with paint marker.
I definitely like this after adding all the extra stuff to it. Destiny wasn't thrilled with the colors in the end, but she had a good time making it, so I count that as a win.