Beautiful work Fencer, and a great subject besides. I read that Jack Ilfrey was a real pistol - when he was promoted to Major, in the ensuing celebration he caused so much trouble they busted him back down to 2nd Lt. Some brass later intervened because they'd never had a squad commanded by such a low rank, so he got bumped back up to Captain.
I think something is off on the gun muzzle exhaust(?) stains - they appear to be pretty hard, and have discolored/faded the paint - I've not seen that effect before on a skin.
Also, on the left side view: the panel lines just forward of the canopy - on the cowl top they have a glare line behind, but lower on the fuselage side the glare line seems to have disappeared and been replaced by a grime layer on either side on the panel line. The disconnect is noticeable is all.