This is the technique I had a sample of at our first meeting. (Caution - bad photos below!!)
I used sticky paper, but Linda says that the wide scor-pal tape is excellent too (and probably much cheaper!) It's just the right size for cards as well. Remember you can run the papers over the edge and trim afterwards.
Here are the samples from Leadership. She did a couple in a randam design like mine, and then she also did some using the paper like small tiles. Really beautiful in real life!