Very nice job with a freshly white-washed 109!
The only slight critisism I can think of is the exhaust stains. The stains start directly from behind the exhaust pipes. I'd add some staining around the exhausts as well, as in reality, the fumes don't go that neatly, making the stains only behind the pipes.
Otherwise, an awesome looking model.
Could you you post some close-ups on the engine area and cockpit? I'd love to see the impact those aftermarket accessories make.