It's time! (And there's a slight breeze.)
I think I have a new favorite sweater.
Oh, yeah... I learned stuff. What did I learn?
(Warning: this is probably stuff you and everyone else already knows. Captain Obvious, and all that.)
Moving between positive and negative ease probably needs to be taken into account when adding shaping along the seam. Or better yet, don't shape right along the seam... or only one side of the seam.
Maggie Righetti was right - add that extra inch to your planned sleeve length for a sleeve that extends below the elbow. (Or don't measure along the inside of your arm, which is bound to be the shortest length when you bend your arms.)
With a bit of planning, seaming can be a beautiful thing. Everyone should at least try it, at least with a practice swatch. (Well, two swatches.) It's rather exciting.
Despite what sweater books may say on the cover, they're probably not the only book you'll ever need on the subject. Be willing to use your library system.
Taking a lot of time on the front end to plan well actually makes the process much quicker and is generally good for morale.
A lot of focus has been given to encouraging women to feel comfortable in their own bodies, and fitting women's sweaters in flattering ways. The fact that attention was being given primarily to female anatomy (bust and waist shaping) distracted me from the most important point -- the one that was right there in front of me. As a man, it's fine if I want a fitted sweater, so long as I'm honest about my body, too -- which in my case means acknowledging that little belly and knitting for it.
... Now I'm in sweater withdrawal. Luckily for me, I plan to make more!