I made these two cards by stamping onto metallic boards that are covered in black. The hardest part of this was finding an ink that shows up on black that dries, all I had was pigment inks and they did not dry with heat gun after I already allowed them to air dry for 48 hours, I finally brushed some perfect pearls powder on the ink to at least keep it from smearing as easily while I etched off the stamp lines exposing the gold metal underneath. I also found a baby wipe will clean off the powder and ink residue remaining after etching, Too bad my scanner does not show the nice crisp etched lines.