I see you tried to play with diminished chords to give that uneasy feeling from the painting, which honestly quite work, but I wouldn't say it was perfect, the execution of this idea seemed quite clumsy (maybe due to your lack of time). When dealing with unusual harmony it is better to spread it in small amounts, the contrast with non-dissonant harmony highlights the dissonant moments and actually enhances the uneasiness.
Other than that, great instrument choices, though I would've liked to see the idea be developed a little bit more.
I hope you manage to get the opportunity to make more time for the next jam !