Have also been playing with some atc's. This one ia acrylic paint background, put on thickly and then heated with a heat gun until it bubbles. Have then gone over it with metallic rub ons. The jigsaw piece was covered with tissue paper and then sprayed with cosmic shimmers. Then added some dangly bits.
I found a tin of domino's in a supermarket the other day so am working on a couple of brooches for raffle prizes, when finished - and if they are good enough! - I will upload the piccies.