I finally figured out how to get a nice white background. I used the back of some christmas wrapping paper, lit from above and 45 degrees to left with 60 watt incandescent bulbs in a room with bright windows behind and to the right of studio table.
A longer exposure produced good whiteness, a shorter exposure made the background grey. I achieved exposure control by adjusting the EV settings on the finepix 3800 and focused the AE on different areas of the frame to achieve different aperture settings.
Post processing includes adjusting contrast, greyscaling and cropping/resizing.
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Nice composition, great idea, nicely lit; no real hot spots, and a nice soft shadow on the right. A bit too much white for me, personally. Perhaps just a little tighter crop on the left would help?