Great looking MOC! You should post more photos here though - I humbly suggest you to link the photo to your flickr account -, you made lots of incredible details that are not visible in the photo: broken windows, a power unit? / food producing? floor, building decay, custom stickers (really great stickers, congrats!), interesting and detailed building sides and back, and so on. It is incredible that the building stands on a few technic liftarms, is it stable?
Really like it, congratulations!