Hey there,
We held a contest this summer for our Idea Deck and received 162 fabric postcards from 58 card artists in 6 countries and 25 states. There's a wide variety of styles, from pictorial to abstract to traditional. Lots of techniques, too: embroidery, thread painting, applique, etc.
You can explore the collection and watch the slideshow at:
http://www.artcardideas.com/2007/artcardgallery/