I'm not too fond of RM's bump maps. She makes them from the color map and they are f'ed up.

Look at this. What is up with the eyebrows?!?

Have a look at this thread. I think you'll find it enlightening.

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2796835

If yours looks like this, after you get your luminance sorted out, come back and I'll discuss how to put a procedural bump on your figure that will work much better.

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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)