In this very same forum you'll find the thread created by Siara (And stickied at the top) where you can follow his construction of the Revell's VIIC 1/72 model with TONS of precision and detailed additions. In the same thread, many pictures and discussions about the details were followed, so I recommend it to you as a great source of specific research.
Good luck - and don't forget to show us pics of your WIP