This is called Burst.
I painted the first layer in black. Next I laid out several layers of red and yellow. Where those two colors mixed I got shades of orange. I used a compass to draw the two large circles and outlined the circles with shiny black puff paint. Before the black dried I used a brush to pull it outwards from the circle.
I really like the puff paint. My wife told me about it. She has used it to make Christmas stockings. I tried it and it's really cool. It creates a definite raised area that stays shiny.
I had planned on adding shades of blues to the circles but when I got to this point I decided it was good as is.
Sheboss is in love with this and had me hang it in the living room.