Hey, nice entry.
I'll admit, the controls threw me for a sec coz I assumed UP was thrust
(but then I read the instructions, like I should've done originally!)
With regards to the cart label - this should be easy to sort.
In PICO-8, just do CTRL-7 at any point while the game is running to capture an updated label.
(then just SAVE and re-EXPORT / upload and you should see the updated label image) 😉