Looking very good Peter. The paint has gone on smooth. Great job on the propeller, I find painting propellers very annoying at times so well done mate.
Think I might try a an overall wash Peter. Say a washed out fawn to go with the brown colour on the aircraft. May well then give a another wash overall but then give intensity to some parts to give a very very subtle difference. Second wash colour very washed out grey. all to give a patchy worn look but very subtle.
I always put a copy of the paint finish on an old fuselage which I use for testing ideas.