PFX is good for eyebrows. the bump can aid a little with the eyebrows. but it looks worse than pfx dose for sure.
you can make your bump buy just having a nutral gray background. RGB 128,128,128. make anything you wan to stand out lighter gray and anything you want to sink in like wrinkels, a darker gray. Takes some playing to get use to it. Also a good idea to examine other bump maps when you come arcrost them.