Okay, so, first, I'd add commas and overall just punctuation to make it clear where pauses would be when reading, and this is optional but I'd also make it more descriptive! The semi-metaphorical tone you had is good, but adding more description to things could make it seem more interesting.
For example with the puncuation:
"You thought were fine;
Didn’t think you’d do your time,
Yet know your face is scrunched
As if you ate a lime."
The descriptiveness is entirely optional and up to your creativity, but it can help the poem seem more professional and interesting. You have a lot of skill already, so I wouldn't worry too much about needing to "be better," especially since poetry is more of a creative thing rather than something you need to be perfect at. (•‿•)
