Congrats on your first game jam submission ! At least you shipped something (people often do not ship anything for their first game jam because they were too ambitious)
Some advice for your next game jam, when you have your idea, cut the scope in half, then cut it in half again. You will probably still overscope like everybody but it will be more manageable. And for the art, try to choose your color not only based on how good it looks, but also based on the gameplay. For example in this game the contrast between the different types of floor and the walls / furniture is too low so it can be confusing, a high contrast would communicate more clearly gameplay information to the player
Anyways I'm sure you'll do better next time