Six months ago I wrote a blog a nice D.I.Y with an old lamp IKEA.
They are sometimes at the thrift store of IKEA old lamps. I tried for a while to pimp your cards. If the back but blank, and preferably translucent then this may very well,nl.
The best result you get with a placemat. Coincidentally, I found another one today, a graceful peacock at the circuit!
But look here first as all the steps in a row!