my short film script

I am working on a short film based on a college student being late for his class. The title is "Late For Class"
There will be about 4 actors.
Actor A= Student
Actor B= a stranger carrying paper
Actor C a angry or aggressive person.
Actor D= Teacher

The shot will be from point A to point B. The location is near Nottingham Railway Station. Actor A will be the main character. He will be late for his class, as he looks at his watch then he stresses out and runs toward college, He will be introduced to Actor B by bumping in to him and dropping his paperwork, Actor A will help Actor B by picking his paperwork up and giving it back to him, after that he will start running again, later he will be introduced to Actor C by accidentally pushing in, Actor C gets angry and he pushes Actor A in an aggressive mood, Actor A runs again and he enters the college building, while Actor A is going up the stairs he will trip on the floor, Actor A will have a short vision of him getting shouted at by his teacher (Actor D) but later Actor A will enter the class and he sees no one in the class, Actor A will look around and he will see the college clock which will notify him that he is 30 minutes early and his watch is 30 minutes fast.

props
tripod
Panasonic camera
college clock
papers
4 Actors