Hi Tore,
Good advice I think! And the rest of what follows of mine means little because you are a vet and were there! I'm just an armchair historian! But it might have some small use...
That 3rd shot shows the perfect amount of canning in my opinion...My experience is that any sheet metal on ribs will have some dish/can effect because of imperfect materials, expansion/contraction, etc. I've seen the QEII and almost any ship - well, whatever the name or effect, overall you can easily tell sheets of metal are affixed to ribs, because you can see subtle differences where the ribs are and are not. think it's important to communicate that, otherwise a model can look like a solid piece of plastic.
Weathering - I forget if it was Eugene Fluckey or Richard O'Kane, but one of them was walking back to their USN Gato at Midway, and almost didn't recognize her: because they obviously never got an overall view while at sea, but at the pier the hull, originally all black and clean, was faded to many grays and charcoals, and had chipping and salt spray weathering all over, looking rather old and tired after only 6-8 weeks at sea. In Iron Coffins the same thing happened to Werner, although with his patrol history not quite matching records, maybe he was being dramatic!