>>287333and>>287501herehere is my first critique just based entirely on formal expression; how large is that overhang exactly? you should include a scale figure in your model so i can get a sense of scale. based on the trees, it seems that the overhang is cantilevering quite a lot. i forget off the top of my head how long steel members span but that might be pushing it. now i'm not entirely sure on that, though. afterall, Koolhaus did defy gravity with the CCTV tower in Beijing.
next, that large uneven parapet on the sloped roof. is that something residual from your massing studies and concepts? im being critical of it only because i'm not sure of its function. now if you would provide some more information about your project, i wouldn't be nitpicking these detail decisions.