Shirt issues

So, when he put his new tasty foofy shirt on, it sat real funny over his shoulders. Looked well wrong. And I couldn't figure out why. But a read over Renn Tailor's shirt making page makes me wonder - How low did I cut the neck in the back panel? this could be the issue. I don't remember, though I'm not use to cutting out HEAPS, but perhaps I cut out enough to make it strangle him a bit.
So the plan today is to cut a new shirt, this time taking VERY LITTLE from the back of the neck, and a fir bit from the front. I'm also thinking I'll knife pleat the shirt into the neck band, to try and alleviate the hunchback look.