/ic/ - Artwork/Critique

I'm trying to do pieces with actual composition but I'm not used to it so there's obviously room for improvement. I believe I have some clues about some of the mistakes I did:

The two main planes of the piece could be better contrasted by putting the cat further from the camera and the rat closer to the camera

The colours might make it a bit messy as well so some advices on how to pick colour schemes would be nice.

Maybe I should push the line weight a bit more.

At first it did not look like the cat and the rat were facing/looking at each other so I added the eye on the cat's tail to have a thing making eye contact with the rat. This led me towards making the cat into an eldritch abomination but now I feel like I overdid it and the thing is just crowded with details.

Thanks to anyone taking the time to crit this. Also, inb4 someone making a joke about Lovecraft's cat.