Hi Santanu
Tried a workshop as you requested.
Cropped the date from the bottom, sharpened as much as possible as the picture was already badly pixelated, reduced colour and rotated slightly to level. Also added a frame that would exaggerate the "tunnel effect" of perspective shots.
Hope you like it. Will do a better one on receiving the bigger version of your picture and give the details then.
Regards
Vijay