Absolutely love the atmosphere and aesthetic you went with! The art is so pretty! You did a very well job for doing it all by yourself (coding and art)! Two little critiques though; 1) Maybe some kind of tutorial or recipe guide to refer to while in the game? Obviously under time constraints, I can see why you may have needed to add it below the game on the game page. And 2) A larger visual difference in regular milk and steamed milk. The colours are very light and a bit to similar to distinguish between.
Overall, a cute little barista experience!