So, after quite a bit of input from the Privateer Press Forum, I’ve addressed a few problems with my scheme.
First, my beast skin lacked depth – This was fixed with a layer of highlights followed by a watered down black wash. I also re-highlighted the shredder’s scales and added just a touch of white to his spines.
Secondly, Lylyth’s armor was way too bright, and the highlights far too thick. I blended in the highlights a bit and then knocked down the brightness of the armor with two brown washes and a black wash. This way, I kept the depth and texture but dimmed the glaring brightness. I also used a watered down blue wash to smooth her cloak a bit – this also deepened and enriched the color just a tad.
Lastly, I was able to get the first layer of skin down on the Carnivean! This is 3 layers of skin tone (basecoat Grey -> 1:1 Grey and Flesh -> 1:3 Grey and Flesh) followed by a strong black wash, concentrated on the recesses and folds of the skin. From here, he’ll get a nother coat of the 1:1 and 1:3 and then a watered down wash to finalize the skin.