Here's the problem. This is mostly back light, with the other three turned really low. When viewed from the side, the fastscatter makes a hard edge at the limits of the back light. This is why I hate fastscatter. I can't think of a way to get rid of this. The ears look good though!

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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)