this is the first time i’ve done sleeves, so i am pretty happy with the whole thing. anyway, here are my comments and changes to the original pattern:

1. i knit the fronts and back as one piece, instead of 3, and decreased the cast on amount sum by 4 stitches to account for the seams that would not be there. i also decreased the cast-off at the armholes by one per direction (4 total)
2. i knit both sleeves at the same time, using one needle and two balls of yarn, flat. i was not up to adjusting the pattern to knit in the round at that point.
3. i used invisible grafting on reverse stockinette to join the sleeves together
4. i joined the sleeves to the body using matress sitch

i am pretty happy with it. it always is so cool to finish something!