Using Color Key Effect for separating out the center clipping. Fixed the problems of Matte Distortion by re-masking the same footage with a rectangle and feathered it.
Removing the upper part of wall with bricks visible was most difficult because it overlapped in colors with pant colors.
Your feedback is more than welcome to improve it.
I used ROTO brush to crop out the subject one by one but it was working pathetic. The matte was pretty distorted one and wasnt working fine.
And yes the starting animation was made by using particle systems and Lens Flares and 3D Text Effects.