I think you need to refine this a lot. It's a great idea, but city nor cat are strongly represented. There's just too many lines, too many angles. It looks like a cat with a bag on it's head stumbling over glasses. I'd make the cat curvier, they're supposed to be sleek animals, then worry about the city skyline.
If you are going for the 'rustic' look, you're not quite getting it.
Right now this looks like an amateur attempt at using Illustrator while not knowing what a cat looks like. Cat's noses don't turn up like some dogs'.
For streetwear don't you need to be a little more aggressive? A little more forward thinking? A little more edgy?
Your negative space says "Art". Intended?
Go back to the angular alley cat concept. It's character brings something fresh - a bad ass edginess. Carry the angular outlines throughout all the beast's anatomy, include a paw to the raised up front leg. Blunt the nose.
And there's tons of pyramidal and angular architecture out there for inspiration reference out there - abstracting the city skyline and the beast's form shouldn't be a creative restriction to the final form.
I think a more thorough investigation of the cat shape is in order.
A couple dozen sketches. And in 'sketch" I mean a couple dozen completely different ways of rendering "cat".
neither one are really "there" yet. Same goes for the city-scape. You need to develop more ideas for "city" than the current idea.
Then comes the hard part: integrating the two.
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