Here is one that I learned from:
http://quilting.about.com/od/quiltpa...c_postcard.htm
another
http://www.dollyduo.com/Fabric%20Pos...structions.htm
Here is a tute I found on You Tube
http://www.youtube.com/watch?v=aC6-GyD0f6s
These help give ideas. I still like using the heavy timtex for the stability.