Like others have noted, you end up with 3 stitches too many on yoke - for size s/m 113 st, but the colorwork pattern uses 110. Easiest way to solve this would be to k2tog three times on one of the last four rounds.
Also think the (k1, m1) * 23 sequence at the very end gives a lopsided result, could perhaps be knit as (k2, m1) * 23.
I cast on 5 steek st rather than 2 for the body and used a crocheted steek reinforcement. Didn’t do the elbow short rows as I knit the sleeves two at a time on a long circular needle.
Note: if the steeking twice seems daunting, you could just as well knit the body back and forth and pick up stitches along the fronts for the colorwork band. There are really no benefits to knitting the body in the round, except there’ll be no purling of course. That way the colorwork band will be the only steek, and that’s only 12 rounds.