alright, well, apologies if I am unclear/not really helpful, but this is my first critique, so I hope it is ^^

what I do love is Nova's expression, it's just so adorable ;u;
the way you drew the fur is really nice and subtle too

my only suggestion would be with Nova's tail. the black outlines look a bit "harsh" and the different shades sort of meet eachother a bit abruptly. if you spread out the colours a little bit and maybe dithered them, I think that might fix it.

anyways, I hope this is helpful c: