Development of the foundation model is coming to a close. The feet are roundabout the best I can make them so I moved on to the other parts of the body to get started on UV mapping. There is still a lot to be done with the UV maps but that and rigging will be a task to conduct over the next week.
Like with Colo Colo, because Four's core body is a tube and will likely be quite prone to squash and stretch I thought it appropriate to keep the relevant UVs straight so that areas that look like they could be stretched considerably can have generous areas for texturing.
I've flattened the feet a little more to coincide with the sort of decline common between the ball of the heel and foot. Which I feel has helped sell the toes as not being quite so vertical as before. This helped make the membranes feel less thick but not separate them and the tops of the toes and fingers with a massive chasm.
Finer details for musculature can be made with Mudbox. I'm still unsure if this is the above is the right sort of chest for this kind of creature. It'll have pectorals, certainly. Such muscles are used to drive the shoulders. I could perhaps blend the shoulders a little with the pectorals to suggest connection.
Before UV mapping I made one last minor tweak to the gums in the form of rearranging the sockets to that the teeth closer to the tip of the snout can more easily cross between each other when munching down on any food.