What If? Metropolis- More building shape ideas

Since I really liked the previous building I made, I decided to go back into illustrator and make some more buildings and colour them in. I'm liking how they look, and I may focus on making my main building soon since now I think my original one is too plain to be the library of my city now. I also will probably start doing more detailed drawings of trees and possibly add some decorative festival lights. I still need to sort out the scale, but I only reused the background from my previous thumbnail so I haven't edited it yet.