I'm currently following Johan Lithvall's Hair Creation for Game Characters course. He suggested I add a bit more variation for the specular to make it a bit more interesting. I've baked out a couple of extra Height maps (using xNormal) to composite with in Photoshop, but I'm actually really struggling to do it.
I've been trying to use Blend modes, Adjustment Layers - such as Brightness/Contrast, Hue/Saturation, Levels, Curves etc. - but they're either not working, or I'm not getting a good enough result. I just have a complete mental block at the moment and I'm unsure how to proceed.
He suggested something like this using Hue/Saturation and Brightness/Contrast:
I have a few Adjustment Layers stacked above some Height maps in my
Photoshop file. Some of those appear to only be making a subtle
difference. But adding anything else just isn't doing a lot. And I
certainly can't get some interesting breakups like in that image.
And this is what my hair texture currently looks like, along with the Alpha and ID map:
I also have some Gradient and Root bakes too. And then here are a couple of the extra Height maps I did to add some more specularity:
Any help or suggestions would be greatly appreciated.