Starting the Editing Process

Editing a film project is both the most difficult and interesting part of the process. It can either make or break a movie. 

My intent in the beginning of the film, or the opening, is to establish a a clear juxtaposition between the calmness of the surroundings of the house with the chaotic inside as the house is filled with various gunshot sounds. I want there to be an idea of what the main character is experiencing within his own head, and how his mental state contrasts from those who surround him. 

There has to be a smooth transition of serene shots in the beginning of the film, in order to achieve that calmness.