Great game! You really don’t have to do much more with this.
It’s near impossible to see boba in the espresso orders. You may want to add a high gloss texture to those juicy black pearls.
I wish it was easier to reject customer orders, with a small penalty to barista happiness. In the latter part of the game you are stuck at 90%+ happiness anyway so it’d be nice to reward expediency, and ignore those 100% plain coffee orders. It would also open up dialogue trees for customers to give snarky dialogue for being rejected. “Mooters would never treat me like this!”