Ok, finishing is NOT my forte. :knitting: I have no idea how to sew in this blasted sleeve! :whoosh: It’s not a question of how to fit it in, I can do that part, I’m more confused on the mechanics. :shrug: I did a three-needle bind off on the shoulder seams and had no problem with that. I had no problem with the side seams either. But the shoulder seam won’t exactly lend itself to either. Help! 
Oh, just in case you need to look at what i’m knitting, the sweater is here. zippered jacket
You can still do mattress stitch on the sleeves.
What I do is tie pieces of yarn to attach the sleeve at the shoulder, underarm, and half-way between on each side–just pieces tied in a bow to hold the sleeve in place.
Then pick up the bar of a stitch from the body and a stitch from the sleeve and work your way around. If you need to, you can skip a stitch here and there to keep it even. I usually work from the shoulder down on each side so if there is any unevenness, it ends up in the armpit.
I don’t have time to link to it now, but www.knitty.com has a good article in their archives on seaming sleeves.
Maybe this is what Ingrid is referring to?
http://www.knitty.com/ISSUEspring06/FEATspr06TT.html
Another that may or may not help… :think:
http://www.knitty.com/ISSUEfall04/FEATfall04TBP.html
That was exactly what I needed to hear. And the article from Knitty was a huge help. 