Nice work, and don't sell yourself short.
I did a similar thing on my 1/48th scale B-17G, although I didn't 'clad' the area around the wing slot - I just fabricated the frame work, based on the detail on the bottom of the central beam, provided in the kit, and using photos of the bomb bay.
Did this on the 1/48th B-17F as well, although that's since joined the model graveyard - and one of these days, I'll finish the final bits on the B-17G ........ it's only been about 24 years since I touched it last !!!