Firstly, I love the lobby! Team GOML ftw!
But there is some things you can work on.
Most of the builds seem to be made out of mostly one block, IE: Full wood buildings, full brick. I don't see this as a bad thing imo, I couldn't care less. I build terribly! But in the eyes of real competition, most people would look for detail and lots of it.
And also the table outside, (I think it's a table). Doesn't look that stunning, if I were you I'd make it look really snowy outside.
But on a more positive note, your lobby has heaps of detail outside, imo.
I absolutely love the snowman, the Christmas tree and the presents and the general snow outside, and I love the Christmas theme! I also think the parkour is really good! (Might be fun if you put some red stone in there.) The reindeer in the outside of the lobby seem cool!
So things to work on:
Detail
Table
That's it! I honestly hope you win the competition! c: