Your sign is more like a grave marker than what's shown in the concept art. in the art, the ends are half cylindrical, and have two boxy fin type things at the top. The human architecture also has a lot of supports jutting out, supporting balconies. Take a look at the entryway of "makura body". See how it uses quarter-cylinders at the top that taper inwards? Above that is the structure with two panes of glass, one at 45 degrees to peer downwards through to the street. Below "makura body" is another tier of shops. that semi-circle is the overhang of another storefront. The fallen palmtree behind the car is a tier below it. The street level of the car and the "makura body" shop area is the same height.

The streets have shallow curbs and the street itself does not bank like yours appears to. Neither is it that asphalt texture you have. Detials such as the slope at the crosswalk also neeed to be accounted for. Look at the super structure in the background behind "makura". Do you see the design language there? You haven't incorporated any of the desing language into your map at all. I know it's a painting, and somewhat soft in areas, but it is by no means vague, so you can't really use that as an excuse. The style of human architecture is pretty well defined here.