This technique is lots of fun. It's almost like Shrinky Dinks — do you remember those.
I stamped the flower image from the Flower Shop stano set onto a piece of Stampin' Up! Window Sheet using Stazon ink. Turn the stamped piece over and color the flowers with the Blendability markers. Punch out with the coordinating Pansy Punch. Hold the flower with a pair of tweezers and using the Heat Gun apply hot air to the plastic (be careful not to burn yourself). You can see the plastic start to thicken and curl, move around the flower until all the petals are done.
I used a Candy Dot Base Brad and colored it with the Daffodil Delight Blendability. Adhere the flower to card front with glue dot. Then I punched a hold in the center of the flower, insert the brad and attach the piece to the front of your card.
The ladies thought this would be fun with a fish stamp — you could color it with the Night of Navy and Coastal Cabana Blendabilities. So many ideas to play with — give it a try.