I don't have this book, nor have I ever knit anything from it, but I'm going to give it a go, anyway
Looking at the directions you've included and looking at the photo you provided, something looks wrong to me. This is the right sleeve, right? And the new sts in provisional cast on are coming out of the left side of the sleeve, right? But isn't that part supposed to be the right front? Which would mean coming off of the other side of this sleeve? "With crochet hook and smooth waste yarn, use the crochet-on method to provisionally CO 37 right front
sts onto straight needle in larger size." Or did I read this wrong or am I missing something?