There's some good production muscle flexed here, especially that makeup - top marks for that department.
If there are two things a mostly-one-room short relies on, though, is writing and acting. Unfortunately, this short doesn't really smash either. Conceptually, the plot is fine, but the dialogue could have used a lot of tweaking so it went beyond 'describing the plot'. The performances are also pretty wooden, so having both those things in tandem drags the film down. But these are elements that evolve through experience, so just keep at it. You'll improve.