I mentioned in my Snippets blog post earlier today about how I remove toppers from shop bought Christmas cards when I want to use them for up cycling.
The face-down idea struck a chord with a few of you so I'm really happy if it's of use. Parsnip just nudged me to say there's another bit to the trick I didn't mention - although it's not always necessary.
Before flipping the card front with topper attached face down, it can be a help if you trim around the topper area, leaving enough card to grab with your fingers easily of course. About an inch all round works well. It sometimes helps you to keep the topper firmly pinned to the desk whilst you're peeling the (now smaller than before) remaining backing layer away from the sticky pads.