I learned next time to test what the game looks like in full-screen on itch before submitting :p
Also to prioritize a tutorial next time. Towards the end I had a few irl friends playtest and saw how, without any guidance, what I thought was a relatively simple mechanic can still be confusing to first time players. We tried patching it with a quick last minute 'How to Play' graphic, which helped a bit, but next time I'm definitely making sure the tutorial is more than an afterthought.
Lastly this was the first time I worked on art for a fully 3D game jam. I've used blender to make pre-rendered stuff for 2D jams before, but this was my first time making something in real 3D and getting to practice that whole pipeline. I definitely got a lot more comfortable and quicker at pumping out a lot of assets in a short time frame lol.