BTW, the top picture is of an absolutly stunning jacket. I hope you get a lot of pleasure from it. Due to the spalla camicia, I am assuming that it was made in Naples or its environs. Have you noticed that different tailors that you have frequented in those parts treat the waterfall shoulder differently? I have seen some that are absolutly flamboyant in their shirring and fullness, and some that are much more sedate. Often, and to me this is much of the romance of the look, the two shoulders of a jacket are not necessarily the same in this regard (Cesare Attolini once explained about this phenomenon that 'Elegance is not perfection'). Your jacket shows this in the full back picture. Is it one of those things that is a real signiture of each tailor, or does it also have to do with the artisanal nature of the way the sleeve is set leaving each shoulder slightly different and with its own personality? Possibly it is a combination of the two factors.
Every tailor has a different interpretation of everything, and that's what makes bespoke tailoring so interesting. A "spalla camicia" is fundamentally a simple style and yet each hand and eye will render it just a bit differently.
Cesare is fond of this expression and he is exactly right. If you want a perfect jacket, then buy RTW. It will not fit you but it will be perfect.
The variances you see in the back view of the jacket are the variances of the wearer's body. He is not ashamed of them. He certainly could add a few kilos of padding in the requisite places and make himself look like
Davide but to what purpose? And wouldn't it seem a bit like hiding? It takes a certain amount of self confidence to wear natural shouldered, soft tailored clothes. But self confidence is extremely attractive. The magnetism of elegance is transmitted to the world thanks to the conductive material of confidence.
Cheers