On NGS group we are studying Bernie Berlin's book "Artist Trading Card Workshop". This week section is on Embossing Scraps. Glue down various scraps of paper to your ATC card using a glue stick. Be generous with the glue stick, so some of the glue oozes out. Then brayer the pieces down.
While the glue is still wet cover the card with embossing powder (using the color of your choice).