I am now on the up again as I was so inspired by the article that Sherrill Kahn has written for the September issue of Workshop on the Web that I immediately had to have a bash at some of her techniques. Here is one of her pieces.
The article covers the simple technique of rubbings from stamps but she shows so many ways and materials and then describes how to put it all together.
I had most of the media she suggested so now all of my rubbings are drying off, having been overlaid by lots of different paints. Can't wait to put them together.