I wan't sure about the sleeve cap -- the pattern I used was generated by Sweater Wizard 3.0 and looked a lot nicer than the one that came with the original pattern, but still isn't the smoothest sinusoid I can imagine. In particular, WHY would the slope get steeper right before the final rows with all the bind-offs? That basically guarantees a stupid-looking little corner of waste fabric on each side of the sleeve cap. Anyway, I followed the pattern, but because I had suspicions and I am anal, I pinned the sleeve into a sleeveless black shirt I have.
And it does pretty much seem to fit! So that is good. As long as I don't skimp on the measurement between my neck and the point of my shoulder, I'll be fine. Here's a closeup of the cable detail down by the wrist:
I'll be putting the mirror image of that one into the left sleeve.