I love this big cat, and believe me, I can't wait to get my hands on him, but, if you'll allow it--the face still seems rather amorphous to me, and has a distinctly Millennium Big Cat flavor to it.
In the profile aspect, the head proportions are a little off. I've composited this image comparing the profile of the model with a photo of a leopard in profile. I've outlined what I see as problem areas. The blue follows the lines of the model, and the red highlights the lines of the photo. Green is where I estimate the model's ears would be if they were held back like the leopard in the photo.
As you can see, the jaw is too large and too far back. The skull should be a bit more rounded, and the muzzle is too round. The eyes should be larger, and higher, with a more distinctive v shape from the outer corner of the eye where the eyelids meet at the corner and a more pronounced half circle effect where the eyeball occludes the inner corner of the eye, from which the tear stain area should flow very straight. The angle of the nose is a little too soft. The ears may be a bit too big and are too high and far forward on the head.
Something I find very helpful when sculpting an animal face is to look at sculptures by other artists to try and determine the aspects of the animal's form that are usually exaggerated to capture the most realistic and recognizable effect. As well as to get a feel for the general forms without the distraction of fur and coat patterns.
This image is a very nice sculpture of a leopard head. You can see that the shape of the nose and mouth, as well as the brows and eyes to some extent are exaggerated, but it makes the overall aesthetic of the sculpture more relateable and realistic feeling. This sculpture has a lot of character, which I feel is currently lacking in Kitty's face, especially around the eyes, nose, and mouth.
