CAS(E)this Sketch #133 immediately suggested this technique. I used masking fluid to coat several sizes of butterflies punched in vellum. When the fluid was dry, I misted the paper and applied color with Holtz Distress inks ( squeezed lemonade, mustard seed, and spiced marmalade). I dried it with my heat gun, removed the vellum and rubbed off any remaining mask gum. When I was sure it was thoroughly dry, I stamped the sentiment with Versafine Onyx Black. I trimmed the piece and backed it with a piece of foam on a watercolor paper card base. One of the vellum butterflies had retained a bit of color, and I decided to color in its body and add a black sparkle.
Linked to CAS(E) This Sketch and Just Add Ink #272: Butterflies.