This is clearly a team with an understanding of basic story structure and how to incorporate the genre and its tropes.
Inconsistent sound and technical gaffs aside, I feel what really needed building upon in your film was the story beats.
It's cool that the two girls are opposites and become friends, but I thought the decision to try out each other's lifestyle was somewhat unmotivated.
It could have been interesting for the make-up girl to be forced to run in order to catch the bus to the mall in time? Or maybe the sporty girl has a fancy birthday party to go to and so she needs to wear make-up?
As it stands they just sorta decide to give it a go, which removed any kind of conflict or character growth or learning. Characters need to go through some semblance of a struggle before they undergo a transformation.
TITLE REVIEW: "Best" Friends is interesting because it implies they aren't actually friends, but really their friendship isn't put to that much of a test after all.