http://www.theriversend.com/uploads/Fitz_tunic_tutorial.pdf
Stealing Kitty's thundar, but the bel Boards pointed me in the direction of this fancy tunic. Even if you do not do the custom steam a seam trim, you can use the basic measurements to construct a good undershirt or tunic that looks very sharp. Similar to Breeder's at WoR.
I'll be working on mine Friday.