It's essentially going to be paleo-accurate counterpart versions to the 'Psuedosaurus' I've been working on.
This is the first, obviously. The two most frequently used stock dinosaurs, the Tyrannosaurus and the "Raptor" represented by Deinonychus and Velociraptor.
I'm not saying a Rex couldn't possibly have spots of blank skin, much like a rhinoceros or elephan, but I'd think their would be more scales present other than the feet.
Moreover, non-pennaceous feathers kinda look like hair. One can't help but imagine a T. rex with a dodgy toupee or a beard to top everything off, but that's veering into speculative territory, and not in a good way.
We tend to see birds as wimpy, culturally speaking, and the whole "birds are the true heirs of the dinosaurs" and "some dinosaurs definitely had feathers," kinda hit us straight in the mammalian pride. Funnily enough, no one bothered to complain when we started portraying cynodonts with hair, even though the evidence for it is tenuous.
A rhino-like T. rex with hairlike protofeathers is still a very scary thing to behold. Anyone who says "feathered dinosaurs aren't scary" ought to see chickens roosting in the dark. Suddenly those bad childhood memories seem somewhat vindicated.
Great that you have given the T-Rex feathers as the evidence is too strong to ignore. And as a rule of thumb, if we do not know whether a Theropod has feathers or not, we always should assume it did have feathers as feathers have been found in almost all Theropod group; in other words, most Theropods are now known (I am sick of saying thought, it is a scientific fact now) to have feathers.
I for one think that feathered Theropods are far more beautiful and fantastic than those silly big lizards that they got depicted as. The truth is that are are fundamentally birdlike, feathered and endothermic, except most cannot fly (other than birds and maybe things like microraptors) and they usually have teeth (except for the likes of birds and ovirirapatorids) rather than a beak. If people saw them they'd think them weird, often massive, birds.
Incidentally they have found a complete specimen of Tyrannosaurid that is almost as big as a T-Rex called a Yutyrannus. It certainly had feathers on at least many parts of its body, and probably completely covered it. With more large Theropods being found with feathers, it is now more likely that T-Rex adults were feathered in at least many regions of the body.
One suggestion, though: You might want to darken the lines, because the velociraptor is hard to see.
I wonder how popular, over-generalized explanations of why plesioraus etc. are not dinosaurs will cope if we ever find an unambiguously aquatic non-avialan dinosaur? I always thought "archosaurs with truly erect hind limb posture" was closer to the mark and avoids defining dinosaurs based on what they aren't (and also includes avialans, many of which are not quite land-based).
Great illustration though, skin/feather textures especially!
They also make the definition that "no flying reptile was a dinosaur" utterly false, but then again Aves are flying dinosaurs as well...