I loved the art style! It has a coherent art direction where everything seems to fit the aesthetic.
Some UI tips that I thought of when looking at it. The font chosen is great for a title card, but it can be hard to parse on things like UI and buttons. Try to find a good match for the fancy font.
The UI is pretty spread out for the kind of game it is. You could wrap the whole window in a margin container to help squeeze it in a bit. The bars on the edges were hard to scan when looking at the middle.
For the UI, it was a little small, which made the white font on a white background difficult to read.
The shop was pretty good. Especially the sound that the shop makes when it opens. I wasn't sure if the time slow was working, as I wasn't able to select it.
For the mechanics, they felt really fluid and matched up with the art. Great entry into the jam!