I think you are right,
i am now trying to position the trash in a random form (using physics lol)
perhaps i separate a bit the bench and the wall,
but the wood from the bench looks like old,
to add graffiti i have to add each plank a single texture,
but i can easly remake the bin and bin holder texture easly,
accutualy i didn’t know how to make the pavement not so sharp (perhaps beveling)
and add some dirt to the floor.
So i will modify the image as you blenderartists thought
Nice scene, although I agree with the comments about the graffiti. Also the bricks seem tiny compared to the rest of the scene maybe you could scale them up a bit, other than that great job!