HI
One of the hardest things is to tell a story in a short time as you have probally found out.
you had some good and imaginative ideas, the garage and car scenes were nice.
I think that a common mistake with short films is that the start of the film has a lot of content and then the pace is quickened to get the story told leaving the rest of the film thin -----this is the case with yours.
With a two min movie you have to hit the ground running, your pace at the beging would have been fine for a 20 min movie.
This is where a script or shooting scedule helps, as a simple guide divide your movie into three parts, a begining, midle and end,then draw a shooting plan- (a pro will have a script and story board).
As a learning tool it is good to shoot the same movie again using the lessons learnt from the first time.
Nice effort keep going
Tanya