The render looks good. The lighting effect is perfect.

The only nit to pick is this: The brick-like pattern of the wall is not showing up in the reflection from the back wall. Did you use displacement? Reflections of displacement don't work right in poser. If so, try using some bump of the same pattern. Keep the displacement for direct viewing, but add some bump so it gets picked up in the reflection.

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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)