Research and Planning: Our Trailer Job Roles

We have decided on our job roles at this point in the construction where the three people in our group are assigned to focus on one main Media Language, here are our predictions so far:

Me: Editing
Amy: Mise-en-Scene
Sammy- Cinematography
?- Sound

We are unsure who will be producing the sound, however these aren't 100% set procedures, they are a brief plan.