Sketch Up Model Improvement

Hello there I need to improve my model The one in the center is the main model the rest is my work, I am trying to keep it in the organic language I have placed the platform which defines the boundaries but that platform needs to be organic as well as the structure to it. Structure also needs to be improved for example there are some errors there , it goes thru the buildings that needs to be worked on and landings to it are not working properly.. Basically I am trying to built a platform to that specific alley ( alley should be open for traffic as well so cant have no landing on the alley.. What do you think ? How else can we improve it? We gotta make the platform organic and add stairs to the each side while keeping the organic language when we do that.. do you think can you help ? Let me know! [login to view URL]