Congratulations ! It's a really good game for a first game jam. Even a bigger achievement knowing you never used Godot before.
Viewing post in The Other World Dev Log
Oh yes !
I would say polish is the best thing to do in jams if you want to win.
I won only one game jam until now. I made a really simple game (gameplay made in one hour) and the two other days I only worked on polishing the visuals and game feel. The game mechanic was not very original, but people love polished games (or at least love to rate them good).