make this a simple clean axonometric line drawing try to keep detail on the buildings if possible don t keep detail on the roads keep parking striping if you can but keep those lines light for clumps of trees and landscaping just outline the clump and not each individual tree don t shade the trees or show depth within the tree canopy only show shadow below the trees remove all text and labels make it a cartoon rendering with color appropriate to the actual surface but make the colors simple and without much depth