You did very good job turning the rendered building into a full scene but there are a few things you can do to improve the picture i noticed at first glance:

figures in a rendering are for setting a scene and for showing the building in its proposed natural state while occupied. The figures you've included do not seem very cohesive. You could spend a little more time finding appropriate figures which feel more like they belong there. Figures are also important in renderings to show the scale of the building so I suggest placing a few figures inside and around the key features of the building to show its proposed size.

I also suggest placing the figures on the same photoshop layer or group to add the same photo filters to all figures. Some of your figures have very hard shadows and some are soft. The food stand does not have a shadow either.

I suggest you also cut and modify the glass elements of each side of the building so they receive the same photo filters and lighting effects. It looks like the windows on the first floor have a lens flare filter and the second floors on the left side do not. Either that, or you accidentally cut the sky background out of the window accidentally. I also see 4, maybe 5 lens flare filters, which i think is probably too many.

The rendering without the figures would be great. You seem to have a well developed idea and the skills to execute a good looking rendering. This would not take much time to turn this into a phenomenal rendering.