The tutorial is here on Knitty
Hint: I blocked all pieces, then seamed all pieces (body and the sleeves) before setting in the sleeve and I must say this was VERY helpful in keeping my seam even all the way around the armhole. I think I would have had more trouble with bunching had I attempted to do this flat, so "tube to tube" is a good way to go! (P.S. That's a tip I heard on a previous episode of the Stash and Burn podcast about finishing)
To those out there still working on it, keep at it. And for the finishers - all that I've seen have been lovely!!