Bhushan: beautifully taken but as cool says tilt problem.
The blown sky is what you can't control with your camera. Either take two snaps 1st exposing sky 2nd the foreground then merge them as HDR as Stuge did.
I think that man is ok? If you want to remove them then clone that area out and then use healing brush to smooth the things out.
This is only a trial what can be done to improve the images. Sky is the limit if you come to editing.
Removed the tilt.
removed the man, irritating you.
corrected the color of upper portion of building.
added some sky tone in the background.
cropped the unnecessary lower and upper portion of the image. Cropping can be done from the left side but I leave this to your taste.
added borders.