You should probably post this in the Tailors' thread.
It seems to me that you have a round back and forward shoulders. The jacket was not cut for that. That is (partly) why the sleeves are unclean and you have the folds in the chest.
Sleeves are on the short side, but probably still passable. Jacket is too short.
Do not take in the waist it will only make it worse.
It sounds like you had a great time there! By the way, did you check out the shoe store "Buday" right next to Vass? If yes, I would be interested in hearing your opinion.Don't take it personally. IMHO they behave the same way with everyone, not just tourists. It's just that the locals don't notice this anymore, while tourists do.