Based on your description, I assume this is just the beginning of a longer piece?
I think it's pretty good and definitely easy to shoot.
A few notes:
Your opening description reads like the beginning of a short story rather than a screenplay. Stick to descriptions of things that can be seen.
Make sure you use the present tense rather than present progressive - "Parm sits at his throne on the cafeteria" rather than "is sitting."
If you want a character to say something, write it out. In other words, avoid things like:
"he explains why he needs to post the picture and tag his friends"
I don't think the VO adds anything but, assuming this is part of a longer piece, it may be important to the rest of it.