Nice Job with the weathering!
Theres quite a few good picture sites out there which i use a base for some of the stuff me & a friend of mine have weatherd (Including our own pictures - Which, come the end of this month, i will get around to creating my own detailed site!) including Martyn Reads Smugmug site:
http://ukrailwaypics.smugmug.com/
Heres a few of our weathering efforts - only photographed these three of my 153s so far, will phot some of my wagons later including the work done to our CDAs (Which Hornby incorrectly weatherd brown:roll
and my efforts on my 2 Hornby Shark Brake vans...
The Wessex Trains Great Scenic Railways of Devon & Cornwall has had its interior seats, doors and cab painted - and very slight scratching of the paint along the windows to represent daily tree/vegitation bashing.
The ex Northern 153 is now sat in primer as it's due to become Wessex Trains 153329 - The St Ives Bay Belle - hence the Wessex Trains refurbished painted interior.
And the ex First North Western 153 in the background has been weatherd and re-numberd into FGWs 153361 - The Ex FNW, Northern & ATW 153 Which arrived into FGWs fleet back in 2007.
As for the paint we use - mostly Railmatch Frame Dirt (2402) / Railmatch Sleeper Grime (2406)