Some stuff about the cat
I dont know if im being petty now but the scarf the little cat wears should be red, i think it would work better, compare it and see. Since i believe there are certain combinations that work brilliant together, while some do not
Or even themed scarfs for different worlds, like snow and forest and stuff, which could be good if you put effort in to it

Ears should be bigger, looks so damn tiny
The shading is great, but try different shading "styles", im sure trying it different ways will improve your skills.
By the way you put in a lot of sparkle and time in to your work, i love the "way" you make animations/sprite "stuff-iluff" its great.
Keep up the good work!