In the meantime, I thought I'd try again to illustrate the benefit of a clappered (or is it clapped?) seam. (There is no definition for the wooden tool that is the almighty clapper in any online dictionary I have found. I just discovered Wikitionary and now I guess I have to add to it but whatta pain to sign up, etc.) Anyway, these are the underarm seams, put side by side. I have pressed both but only clappered the right one. I can see the difference, so I hope you can too. If you are still straining to tell the difference, the right hand one is a little bit flatter, so the tiny trench formed by the seam is a tiny bit deeper on the left hand one. It may not seem like much but when the entire garment has been carefully pressed like this, it looks more professional than if it wasn't.
Okay, I just went back and made the photo "original" size and Flickr and it really is hard to tell the difference. That big fold in the middle is the entire jacket back folded out of the way, so I am pointing to the seams! Trust me. :)
In the meantime, while I wait to get my seam binding, I ironed and laid out some inexpensive but fun cotton with which I will zip up another of the bike shirts that Peter loves. It's just a plain old shirt pattern with short sleeves but he likes the roomy (capacious, even), breezy style as he commutes to work. I wasn't sure if he'd like these birds but he claims to. I am wondering which way is "up". I think "up" looks like it is on the left but that's the cross grain so I have to choose one of the other ways.