You can see Jennifer McGuire's video here: http://www.jennifermcguireink.com/2017/10/edge-stamping-trick.html
Here are my two cards from this technique:
The flower stamp is from Simon Says Stamp and the sentiments are from Avery Elle. I stamped in Memento Tuxedo Black ink, then colored the images with Copic markers and added a few sprinkles of gold mist.
I'm entering these cards into the current challenge at Addicted to Stamps (flowers)