SweetStamps challenge is asking for a technique to be used that includes parchment/vellum...piercing, embossing, etc. ON parchment/vellum...so I tried it! And I DO like the results. The white heat embossing on the vellum looks very lacey. I even used 2 of their stamps: "Queen Anne's Wildflowers Silhouette" & "Pretty Parchment Frame". I also tried a bit of piercing but that doesn't show up very well.
Here's the challenge:
http://sweetstampsblog.blogspot.com - "Parchment" #121