So I made this version, which doesn't require marking on the acetate. And, like a good Po'boy sandwich, it winded up being relatively expensive and complicated, but Oh! so worth it.
I used Therese Travis's Decorative Cat digi stamp (now available on Etsy!), and actually "printed" the image with Cricut markers on my Cricut Expression. I think it adds a "stamped" feeling.
To do something like this yourself, import your digi stamp image file into SCAL, size it, and then make a copy and apply "blackout". Ta-da, instant mask!

At first, I was just going to use bright colors, but then I saw the Midweek Throwdown Halloween Challenge at the Operation Write Home (OWH) blog and just had to make the card for this challenge. So much fun!
Supply list: Cricut personal cutter, Cricut marker, SCAL software, Recollections card stock, Grafix clear craft plastic, JoAnn essentials eyelet, Offray ribbon, Sharpie markers, Crop-A-Dile 2, Zip-Dry glue. PaperFaces digi stamps: Decorative Cat.