Use on glossy paper, dominoes, metal, shrink plastic, glass, and
other slick surfaces. Made for non-porous surfaces (not uncoated paper
nor photo paper).
Here's a demonstration of how to use them, by Tim Holtz: video tutorial.
Before-and-after metal fish by Design Team Member Laura Carson (also used in her Mermaid Castle Tutorial);
click on the thumbnails to see more details and below for links to some
of the other components used.