I’m like you - I always like for people to critique my work. At this point, there really isn’t much to critique. The modeling looks good. Are you modeling based on reference images? If so, it would be helpful to see them.
I’m not familiar with New York in the 30s, but did they have flagstone sidewalks then? If so, your sidewalk looks great. If they were concrete, then… well ahem.
The only other thing that stands out - the rectangular panels on the bottom of the door feel out of place. Generally, in the construction of doors, there is a broad bottom plate across the bottom of the door. It serves to support the entire door, both adding rigidity and supporting the weight of the glass.
These were the only pictures I could find quickly that shows what I mean:
Aside from those things, it looks great!
Edit: I just noticed the sidewalks in the first image. What are those, formed concrete pads?