Daniel,
A very nicely done and finished 1/72 scale Spitfire Mk11. Your painting and weathering is near on perfect.
I do agree with Jeglar that the kit panels lines are to deep & pronounced for this scale, which is something that is very difficult to correct. A aircraft viewed from 72 ft. away would have panel lines that are almost invisible. Your decision to use a dark brown pin wash rather then the more traditional black pin wash, helps to correct that issue. Perhaps, even a lighter shade of brown would helped that much more.
Still, a very well build and finished model.
Joel