Could this be the problem (?): the "pattern stitch" given for the body is set for working "in the round", with the RS always facing you. So, there is no "wrong side" ever facing you. Remembering that, when you depart from knitting "in the round"...you will now have a WS every other row.
If that cuff is looking weird no matter how many times you've tried it, and you HAVE SUCCESSFULLY knit the pattern stitch for the body...my guess is that you aren't knitting the WS rows correctly for the sleeve cuff. Just a teensy off and it will look odd.
Can you re-think it as for a RS and a WS?