The drawing below is from the same group of buildings. First one is a shot taken from the ground, looking up the tall building, almost like a worm's eye view.
The sketch below is looking down from atop a skyscraper at the adjacent one. A bird's eye view.
Another skyscraper illustration, a worm's eye view again.
Related Images: For more sketches of residential high-rises try this post: Sketches of high-rise apartments or for sketches and silhouettes of high-rise commercial complexes try this: Shanghai skyscraper sketches and silhouette
Or for sketches of ancient Chinese Architecture: or Chinese style architecture sketches of the Forbidden City
More Mumbai high rise and skyline drawings: Drawings of Mumbai Skylines - South Mumbai, Malabar Hill and Worli or some pencil sketches of specific high-rise buildings like Sketch of the Air India building Oberoi Towers hotel
For silhouettes of buildings and skycrapers: Skyscraper silhouettes