Random stamp a pattern in light to medium colors.  Heat set with heat gun.  Stamp a solid image over your random-stamped paper with Versamark or other clear embossing pad.  Cover with clear embossing powder, tap off, and heat set.  Ink brayer in a dark color ink, roll over embossed paper, and repeat until desired intensity is reached.  Wipe off embossed images to remove excess ink.  Add piece to project.