Apart from some rhythmic irregularities here and there, it sounds great!
I love that in-out pumping sound of the basses. You do that quite well!
This is one of the charms of Cajun blues. It seems to come out more clearly in blues than in waltzes or two-steps. That's one of the reasons why I love it!
Great box too. Seems you're on the right track. Octa would be proud of you!
Advice: try practicing with some rhythm device. It can be a pain in the neck at the start, but later it becomes fun! You can use a keyboard with an automatic accompaniment if you have one. Otherwise a metronome or drum computer. Or record your own backing on guitar.