There is a mistake in the number of stitches when you split for the back of the neck, they don’t take into account the additional number of stitches for the sleeve.

Also: there is an annoying amount of finishing. This pattern is easily adjusted to in the round up to the armpits, and then the collar and cuffs can be picked up and knit rather that knit separately and grafted on (who does that, srsly?)