Don't act if nobody handles the camera.
Don't ADR, because that will only be another excuse not to finish it.
I gave you this idea 1,5 years ago.
It can be even be done without recording dialogue, if that is a problem, but it shouldn't be problem if you use a c-stand to put the mic on it.
Another simple idea H44 did nothing with:
3 actors (or 2)
3 locations (max)
Most part: woman walking sad on the streets/a long the water/highway. Sad music in the score.
Flashback: in a fight with (ex)boyfriend (not a fight scene! maybe just 1 slab, besides smashing stuff and yelling in a living room: cold be your place!)
She starts crying (as she walks outside).
In the end someone says something that lifts her spirit. Or she drowns herself (depending on your mood then you need only 2 actors) or jumps from a bridge. (No need to show the drop! Suggest things!)
Length: 2-4 minutes. Shorter is better, but too short will lack time to convey the emotions to the public.
Writing: 1 day
Storyboarding: few hours only, but scout your locations.
Shooting: 1 day (or 2 or 3 days during magic hour)
Edit: 2 days
Style: you decide. (I'd go for handheld argument in living room, (mostly) tripod on the streets searching for poetic, desolate compositions that make her small combining with close ups that can be out of focus sometimes: keep it calm when shooting handheld.)
Result: moody video in portfolio. And more experience.
This sad girl story can be seen as an exercise in atmosphere.
You just bump right into the story after one beautiful shot without any person in it. The music already starts, maybe even before the fade in (? just making it up as i type) to create the sad atmosphere. While she wonders around real sad (near the sea or a river) you can either show a flashback of a fight or just use audiofragments (just made that up as well) as if she is still hearing that angry voice saying terrible things to her.
As a conclusion you can let her jump in the river (sad ending), walk into the sea/river and let her dissappear (sad ending with a mild magical touch) or you let a passerby (is that a real word?) give her a napkin and tell her it will be alright (a hopeful end). And then show the title (you will have to make it up, depending on the ending, the location, story). You could look at it as if it's a long commercial without selling anything where the title is part of the payoff.
Remember, it has to be short, so there's no need for a complicated plot.
You just want to convey an emotion through action and beautiful shots. (And you want something nice and finished for your portfolio

)
I will help you little more:
It's the end of the day.
The sun is low.
A girl wonders outside.
She is sad and cold.
The wind plays with her hair. The low sun sets it 'aflame'. Lensflares.
Her arms crossed as if she is tryng to hug herself.
Close up: she cries.
Flashback: fight with (ex)boyfriend (or whatever)
Ending:
version 1:
close up: she looks down, cries and looks up.
Shot of a lake, river or bridge.
Walks into the water to dissappear. Only refection of sunset remains and goes out of focus to show title and credits.
(Or walks onto the bridge to jump. Don't show the jump.)
Version 2:
She cries, looks down.
Suddenly a voice sounds: "Are you alright?"
She looks up.
A stranger gives her a handkerchief to dry her tears.
..................
So:
no acting by you
no stunts
no special effects
no hiring of locations
no shooting at night
you just need to scout your locations, find the right music (or composer) and use some creativity (because there is still room to add things to this very baic script. Or you don't and keep it this simple.)
DO SOMETHING