It took me two whole minutes to realize those drawer handles were something to interact with lol. I was about to give up but the fact that the thumbnail is not the default firework made me try to click all buttons on my keyboard and spam on the screen.
I think a visual diagram of what each part is and does would help a lot. I was just pressing random things not knowing what they’d do. So I think by aiding the player in getting a mental model of the thing works you make it a lot more fun, and it also affords the ability to plan, which is a big part of fun (in hindsight it’s a crucial failing of my own entry too lol). That said i really enjoy the concept!