Not harsh real
I realize this is your first animation, so i won't be all mean at ya. Unfortunately i hold everyone to the same standard thats the only way for me to be fair so don't feel bad, and don't stop trying.
1. the Characters were nice, however their action were often times unclear, animation is the expression of emotion through movement and you left out alot of emotion, and yes i know they're robots.
2. your compositioning was nice at first but realy droped off at the end, did you make story boards for this and if you did you should have spent more time on them, Disney would make his employees spend 50% of the total production time doing pre-production and look at what they accomplished.
keep trying i think you might do good one day.