I had some 4th of July napkins leftover and decided it might be fun to try embossing them with my Cuttlebug. This particular napkin is "dinner sized" but has a wide embossed border. So I lined my embossing folder right up along the embossed edge of the napkin.
It was wider than the machine's opening, so I folded the edge over. I was worried there would be a pronounced crease after running through the machine, but I was pleasantly surprised. I stacked the plates up in the regular embossing order: A spacer plate, B plate, Embossing folder with napkin inside, and another B plate on top. It ran through the machine perfectly.
The napkin came out great. I have tried a couple other larger napkins with less luck, but the wide border on this one made for a perfect emboss. I expect that solid color napkins that are narrow or smaller in size (like cocktail napkins) would work even better.