Very well done for 48 hours of work - I don't think there's much more you could do in such a short amount of time.
I had a small issue where I was having to build new Reindeer Schools (or, I later discovered, storage) in order to have my sleighs launch. I think it was because all my other reindeer were trying to deliver trees and there was no room for any more, so they'd just get stuck derping out around the tree factories. That's the only fault I could find. Fantastic little game!
...also, loving the cookie factory asset! ;)