Here are some samples of current work of a campus master plan.
Comments please…
my comments are that it’s look a bit flat for a rendering such as vray…looking more like scanline… 
and the night shots are a bit strange…in my opinion night means at least a dark sky…maybe it’s my screen…
go on !
yeah i agree with olivier … all looks a bit odd the night shots as olivier said have a day sky ?
ok…sorry good point…i like the effort put for the noise in the glass !
overall your modelling is good …you just need to work on the general lighting and enviroment.
I think the glass looks great. I have the same problem with exteriors in vray where everything from a distance looks flat…
you have to get a bit closer to part of the building see the lighting detail, then the rest in building which fades away into the distance looks better IMO
i think to get it better from this point will take much more work, possibly twice as much just for a 10% improvement. For example, have furniture and people behind the glass, blinds etc
Oh, I like your glass, can U post glass setting? Do U use HDRI?