DZA, you asked what they were in my picture album, so I'm responding here instead of typing a long note on your profile.
You start with a chocolate transfer sheet and they can be found on most supply sites now. (I don't think ITO has them yet) There are so many designs and they run anywhere from $3-$8 each. I find mine at Country Kitchen Sugar Art, Fancy Flours or even Global Sugar Art.
It takes some trial and error but I basically cut the sheet the height of my cake - may have to tape two together to get the full diameter of the cake. Pour melted chocolate (I use candy melts) on the sheet and spread it out, not too thick or thin. I let it sit for a minute or two and then quickly wrap it around the cake. Place the cake in the refrigerator for at least 30 minutes, however long it takes for it to completely set up.
Once it sets, you peel off the sheet and the design adheres to the chocolate. Such a quick and easy for decor when you don't have much time for anything else. You can wrap the outside with ribbons if you like (like my pic).
I hope that explains it! There is a post stickied in one of the forums on CC too by Shirley that explains how she does them. She doesn't use the sheets but uses mylar. Oh, I started taping my sheets to a strip of vinyl to give them more weight. Sometimes they're too sflimsy when I go to wrap around the cake.
Chocolate Transfer Sheets
http://www.countrykitchensa.com/cata...&SubCatId=1544