The technique is easy to do!!!! Stamp the image to be embossed and sprinkle embossing powder quickly over the wet stamped image. Remove any excess powder from around the stamped image by lightly tapping the paper. Use a heat source to make the powder melt and give the raised embossed effect.
There are a variety of embossing powder types here are jsut a few examples.
Regular & Pearls:
Tinsels & Foils: