This is my sample for the Peek-A-Boo Card tutorial - you can find all the instructions HERE!
I made my card with my own stamp images - I'm in the process of bringing all my licensed designs under one company, but you may still be able to find this set at Sweet 'n Sassy Stamps. I love adding shading to silhouette images - this is stamped in Memento ink and shaded with a Derwent Coloursoft pencil.