Stephen,
Picture 2 shows a good example that although you are using flash you can effectivly control the amount of light you get, and are not limited to its full output.
Picture 3 is great as it really demonstrates a bit of lateral thinking. A method of triggering the SB600,
and providing a large area light source.
In the final image lots of detail has been retained in the yellow cloth, and the exposure front to back on the white page is excellent.
Those copies you bought, of Amateur Photographer with the free reflector offer have certainly paid off.
Don