Flashback Script.

For my piece I was to include a flashback of an argument.
Here is the rough script for what I've decided to use:

Two girls are sat in a secluded area in the forest after a night at a party.
Establishing shot of the two girls with another girl in the background walking towards them.
Girl #1: So, have you told Katie yet?
(cut to over shoulder shot of Girl #1)
Girl #2: Are you kidding me, she’d kill me!
(cut to over the shoulder shot of Girl #2)
Girl #1: Well, you should tell (cut back to the establishing shot showing the other girl is closer) her!
(The girl nods in agreement. Camera shows another girl walking towards the pair.
Camera cuts again to over the shoulder shot of Girl #2)
Girl #3: (to Girl #2) what the hell are you playing at?
(Cut to point of view shot watching the girls argue)
Girl #2: Oh get off your high horse, even she’s (cut to over shoulder shot of girl #3 so audience can see character point) slept with him!
(Camera cuts to an unsteady point of view shot close by, presenting to the audience that somebody is watching the pair. )
Girl #1: Hey, don’t bring me into this!
(Camera cuts back to establishing shot so you can see where the girls are in relation to each other.)
You’re the bitch here!
Girl #3: You little (cut to over the shoulder shot of girl #3) slag!
Girl #2: You’re the slag!
Girl #3: How am I a slag? I’ve been with him for five years!
Girl #1: Yeah, you’ve been round with everyone!
Girl #3: He said he loved me!
(cut back to point of view shot)
Girl #1: Well that’s funny, because he said he loved (cut back to establishing shot) me!
(Camera slowly pans upwards to the trees as girls continue to argue then a scream echoes through the trees).

Key- Red means speaking at the same time.