Congrats on completing your first Game Jam! Loved the creativity of the PC home screen!
I have been a game developer for about 4-5 years now and from that experience, I would say the most valuable advice I can give is to not set overly ambitious games. We like to set the bar very high and want to create the next God of war, GTA, or Souls-like, only to have those ambitions crashing down when we evitably cannot finish it. I would recommend creating simple games along with following a task manager to learn what you can or cannot do in a reasonable amount of time.
This is actually something I struggled with even after this many years but have learned to control it. For this game jam, I was originally going to be very ambitious but after some thought realized I needed to scale down the project. This ended up being a good call as despite the scaled-down project I was barely able to submit it(1 minute 29 seconds left :d). It was very challenging and miserable I would have to spend extremely long hours on the game every game along with having to spend 24 straight working it at one point. Thankfully the positive feedback and genuine fun that my friends and this community had with my game made it all worth it in the end! I hope this advice helps you out a bit!
Here is my game - Play Maeltropolis