Knit body in single piece up to armholes, omitting 4 sts from total stitch count of back and sides to disallow for seaming.

Shoulders kitchenered instead of cast of and seamed for a bulk-free finish.

Sleeves knit in the round until underarm bind-off and sleeve cap shaping (finish with a third row of darker yarn before bind off to allow for seaming at top of sleeve cap).

Details of modifications here: http://www.eskimimimakes.com/2015/07/fo-perfect-stripes-c...