Beaut work Andy, and I, too, will have to try that antenna wire thing.
Just one point re the weathering / feet marks; the red-outlined rectangle with the 'X' is the cover over the radiator housing, with the outlined area meaning 'No Step'. This was a thin alloy cover, and would not be stepped on. However, the airframe itself got quite dirty, with grime, dust, oil stains etc being attracted by the fabric covering, very apparent in close-up photos of the real thing, and exhaust staining in particualr had a definite, clearly visible pattern. In both scale models and painting pictures, it's a very difficult thing to replicate without it looking contrived or overdone.
The first thing Air Cdr Ted Sismore said when he saw my 'Shell House' original painting was "Excellent old boy, but the aircraft is too clean"!