My previous tips #1,2,3,4. are direct to those M.T.M specialist and sale person (( NOT to the tailors)
Also I not try to teach them how to do, it is impossible from this page.

I’m trying to tell them what they need to know to avoid a lot of alterations.

To learn must go to a master tailor.

To those who like to see a M.T.M from start to finish Click on Maestri artigiani , and you see a jacket done all by hand in different posture; Reg. Stout, Pigeon chest.