A nice kit and a nice model
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Wenlock's model
here is a superb piece of work and one which can inspire people; as I have seen your models of contemporary LNWR coaches then you can achieve the same level as Wenlock (Dave). I think that Dave has finished his C10 all third in a pretty good representation of the Dean / early Churchward fully lined livery - looks like the only simplification is the omission of the black (chocolate) line inside of the beading to the cream panels.
The C10 is different to your composite coach in that the all third did not have any toilet provision. How are you going to provide for the frosted / opaque glazing to the toilet windows?
More photos please.
regards, Graham