My modifications:
I didn’t make underarm seams as I was afraid there might be some holes. I just picked up the sts like I always do.
It was a bit tricky with both sleeves, the left one because I had to think carefully how to do it in a nice, neat way keeping the pattern, and the right one because the purls done on dpn looked horrible (I decided to do the knits rather than purls as a result, which went much more quickly ;)