The online class I am taking this month started out with a technique for embossing on double-stick tape. The tape and liner (I'm using Scor-Tape) are stuck down to a non-stick craft mat. A bit of the liner is peeled up and embossing powder is sprinkled on the exposed tape.
You can mix powders so I did one of red and gold with distinct areas and one with them combined. I did the same with a green and silver combination. The powders are pressed into the sticky and the extra brushed away.
Then the heat gun is used to emboss the powders. When they are cool the tape can be peeled up and you have a sticky strip of embossing.
The one that is second from the top is the one I used yesterday behind the 'Celebrate' diecut. I used two strips side by side for a wider block.
I will use the remaining tape on projects over the next few days.