So, that hairspray chipping lark is a black art. Looks so easy in the seventy million videos I've watched on the subject
My main issue is getting it fine enough to look in scale. My test pieces were more like 1/35 and looked fine, but 1/72 is a different matter, it just looks like big chunks of paint have flaked off. I played around with different amounts of HS, drying times, paint types etc. Some of it seems to have worked OK, some not so well.
Anyway, onto the pictures. Scratched load deck came out pretty well I think. I used Mr Color over the hairspray as I figured the lacquer paints would be harder to chip, giving the finer effect I was after
Chassis was done the same way but was less successful. Bumper looks okay but less happy with the chassis. Even scratching at it and scrubbing with a toothbrush wouldn't chip the paint in some areas. Maybe there was more paint on those bits and it had just set too hard.
Then the rear load bed. This was overcoated in Vallejo and chipped off in (scale relative) big chunks as soon as I went near it. Might look better with some finer sponge chipping to blend it in, but not a pretty sight as it is.
I'm unlikely to use this effect on the main body now even though it's all undercoated in rust colour. I'll probably use sponge/brush chips over the top instead and save the hairspray for when I've had more practice.
To lift my spirits after that setback I painted up some rammle for the back of the farmers vehicle
Then started blocking in the main colours on the scenery. Very stark of course but it's just a basic background to start from.