Creating the mirror smash

I created the mirror smash in the opening scene. I did this by taking one shit of a cracked mirror and one shot of pieces of a mirror which had fallen in a sink. I then made the cracked mirror sequence longer than the pieces in the sink which was done in Final Cut Pro. I then put the pieces of glass in the sink above the cracked shot in the middle for the shot to then flash in the middle of a different shot. Over both shots I added 'Bad Film' and on the pieces in the sink shot I put two layers of 'Bad Film' over the top to create a jumping effect. I made the clip small to add emphasis. I did this as the shot creates a dramatic effect rather than placing one shot after the other.