Are you serious about the back of the coat? It's shocking!
Yes the
prima facie evidence appears shocking. But a lot of diagnosis via poor internet pictures need a Sherlock Holmesian approach because my experience has taught me that photos can be deceiving.
This tailor has made an excellent jacket front and trouser. The style is quite good and so is the execution. Mr deJong does not look like a difficult fit. Would this same tailor have completely botched the back? Hmm, technically speaking it is possible, but I tend to think that what we are seeing in the back is either a bad photo, or a client who was moving about during fittings. I tend to think it is a bad photo, but only Mr. deJong can tell us for sure and its not even easy for him to know unless he has someone with a little experience to see first hand.
These pages contain hundreds of examples of botched backs that tend to go together with botched fronts, and brutally mutilated trousers as well as everything else in a relatively pitiful state.

I do not see that in this case.
And, of course, we do not know if this is traditional tailoring or MTM. The subject could very well wear MTM or RTW, he doesn't appear to have issues. Or if he does have issues, the tailor has done an excellent job in masking them. You see, it is not at all obvious to make judgements on circumstantial evidence. "Motion denied..."
I think if any of us, Frank, you or myself were in that garden with the nice chair we could judge the reality of the situation in a fraction of a second. Not being there is a decided disadvantage in helping our young friend. But my overall impression is still positive.
Lets try some more photos of the back young man!
Cheers