Fortunately I've gotten my thinking in Photoshop (well Paintshop) layers to such a level that it is second nature even in zombie mode for me to create a new layer for everything... Whether it needs one or not :P
I started to test out the Monitor Lizard component of the shader. This was the first go, and though it is promising in premise, the scales were just way way too big!
If your confused as to what I'm aiming for, it is a pattern similar to this fellow here. I'm wondering if I need to lighten up my Tylosaurs under coats so that the black will be as contrasting as it is on this lizard?
A bit more conversing with David, and I follow what he meant by Newt-like now (he was very kind to elaborate). Specifically how my tail flaring causes it to be way taller then the back and belly of the beast. I can see what he means, but I'm wanting my Mosasaur to feel a little primitive and awkward, so I'm okay with this feeling. Though David is correct in it causing some sense of scale issues, so I will have to meditate on these at some point. Some sea snakes, in particular the Yellow-Bellied (Pelamis platurus), have a very flared fin that runs above and below their tail.
Granted it is not as dramatic or exaggerated as my Mosasaurs, but I just mention it as I want every feature of my Mosasaur to denote something Varniod in nature.
Most artists don't make their Mosasaurs have the distinctly lizard like profile I'm going for. The belly sticks out, the sides stick out in the midriff area, and my tail tapers before the fin flares out. These are all none hydrodynamic features, granted, but modern Monitor Lizards are incredibly good swimmers. In my mind all you'd have to do is stick a bit of a fin like mine on them here, and they'd be super good swimmers.
Don't believe me, I've TRIED to include this video of a Nile Monitor going after a swimming snake (aka swimming Varniod vs. swimming Varniod!!!). Notice how with a similar profile to my Tylosaur the Monitor has no trouble at all swimming through the water. Add a fin to him and I think he won't get out of the lake!