Start with black cardstock. Here I am using the Sizzix metal plate embossing folder to add dimension.
Add little dabs of Pan Pastel metallics on to cardstock.
Blend the colors, adding touches of color until you like what you've got.
Of course, the photos don't do it justice. Here is a plain black cardstock next to my "metallic" cardstock.
Some people use a fixodent spray to seal the Pan Pastels. I use cheap hairspray.
The following card was created for the Creative Card Crew Anything Goes challenge.