Yeah a week is very short(especially if you have a job). Keep in mind there are some month long game jams or even longer ones. While learning to make games though, sometimes a short jam is nice because you get to learn so much while not investing so much time into a project that you feel has to do well (iteration is part of learning, you should expect your first few games to be flawed)
We got our game in a semi-finished state just prior to the deadline (missing most sound effects and some planned animations)
I really liked the door design, that was very well done.
Most jams allow for premade assets(this page has alot listed https://itch.io/jam/goedware-game-jam-zero-ui/topic/3759023/free-gamedev-resourc...) while this jam stipulated the majority should be made by you. Perhaps not having to spend as much time on assets will free up more time on future jams
Thanks for your comment, I think I mostly enjoy making assets rather than the programming/sound parts of game creation. I totally agree with you that a week is very short, especially for one person with other responsibilities, on the current gmtk I actually got myself a programmer, so alongside the design I dont have to do as much programming :) I definitely enjoyed learning everything while making my first ever game and I believe I learned a lot ^-^