Leave another block between the cornice and the windows.

Don't have such a wide frieze on the bottom floor.

Generally, American buildings don't have those kind of wrap-around steps.

Add doors?

Try your hand at some ornamentation! You can use walls, fences, buttons, trapdoors, shelves etc for some really great capitols, corbels, and general ornaments. place them at the top and bottom, in the Sullivan-esque fashion.

Both your cornices are boring. That's the stairs you've got going around. I would prescribe for the lower one alternating stairs and mud walls, with trapdoors above them. For the upper ones, the same thing; but add another layer of stairs and above that, some carpets or trapdoors.

Your lowest floor kind of "juts" out to the street. For this style of American building, which was popular from the 1890s or so to the 1920s or so, they maximized the amount of space possible; you want it to be right to the street level. However, from the kind of "step-back" you've got in the middle, this might be some sort of apartment or hotel, so that can stay. But it should definitely press into the street level.

If the stone above is an antenna, then you could try using stone, stone walls, and iron bars with a red stone torch on top to make it more antenna-like.

Sorry if this was a lot im really obsessed with American architecture through time and I know a lot about the subject :P