The above ATC had a black background (black gesso) with copper metallic paint applied thru a plastic mesh that I had. That created the sort of diamond pattern. I then used that same little cardboard tube to create the gold linked rings. I then finished the piece by lightly applying gold interference paint in a sort of haphazard way over the copper and around the edges. Maybe it's the warm colors, but I really like this one.
This one is probably my favorite. Again, started with the black background, and then I added the aquamarine painted on small bubble wrap applied to the piece. I sort of dry brushed some aquamarine onto the blank spaces not covered by the bubble wrap, and then added some rose by dabbing it on, using my paintbrush. I then randomly lightly applied blue interference paint over the top of it. I didn't completely cover the entire piece with the paint, but just sort of lightly brushed it - almost a dry brush effect. It created a sort of blue mist effect. I like it!