The image on these two cards is in the Crafting forever stamp set from Stampin' Up.
The very sparkly backgrounds for these images was created by applying embossing paste over a brass stencil on card stock and then applying glitter over the paste pattern that's left on the card stock and then left to dry.
It's a messy business and requires more time and cleaning up than some with other techniques, so I don't use this technique very often.
I wish the photo would show just how sparkly this green glittered card really is.
I used a different brand of glitter on the pink card, it's nowhere near as sparkly as the green one, but still effective,