Apply video post production techniques to the creation of a video project

I wanted to use my stalking scenes as they would create dark vibe and i decided to do this so i could make quick cuts to each scene so the audience doesn't know who the stalker is to until the last i also wanted the classroom scene to be unexpected with the bang as my actor is sitting reading then all of sudden he hears the three BANGS!!! i used a wide shot in the classroom to show the surrounding that he is alone in my final scene where my actor is walking up the hill i used a close up to show how anxious and on edge my character as he is terrified and worried about the recent events. For my sound i wanted to make a suspenseful diegetic sound this being my banging sound i like it how it comes from nowhere and is so unexpected i made this decision because i knew i needed something that would intensify the scene