Here's the render. Click to see full size. Notice how the specular reflections look right, and so do the shadows.

For more realism, use more lights - perhaps three for each panel.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)