I’ve made these buildings for my Agent game, that is coming out soon, and they look way too simple I believe. I don’t know what I should add to it, and how to make more details. Please reply with what I can do. I would also like some feedback, thank you.
Operations Building:
Amazing work! I don’t see anything wrong with it. 
The first picture looks great.
The shop building has a very flat roof - so I suggest maybe adding an antenna or a rooftop door.
Thank you, I’ll probably try adding both 
Love it! Try adding corners, it’ll make the building stick out a little more. Also, add stripes on the windows as if it’s reflection, it’ll add some complexity.
The buildings look very nice, I like the style and they definitely fit with such a game. I think you could make the operations building more complex by putting a frame around the windows, it could have a color similar to the foundaments, also something darker on the edges of the building. For the shop building, I would suggest putting wall panels on the walls like you did on the entrance of the operations building, it would fill the empty space.
The buildings looks great, however I have some suggestions that can help you out.
You can make a helicopter landing pad on the roof of the buildings, its sorta like a private vehicle.
Some super duper high tech security system, sorry if I’m going too imaginative by the way, lol
I love the changes you made. Great work my guy.
Consider adding textures. It really adds to the depth of a building.
