Thanks for your great feedback everyone
This is the version of the kit the one with the PE mesh top and turned barrel (
Kit no. 35286) -- it is a really nice little kit (if a little old) and I really enjoyed the build. The instructions were very clear and it went together quite easily.
As it was the first model I tried painting I wasn't too sure what I was meant to be doing at each stage, so some of the results are not quite what I'd hoped for. The scratching is one of these. I have to admit I quite like the 'well used' look on certain models and decided I wanted to try and add some wear to the paintwork.
I used the 'masking fluid applied with a scotch pad' method for the chipping and while it came out OK-ish, it is not a method I'll use again. The problem is there isn't that much control of where the scratches go, and removing the mask can damage the rest of the paint. A much better approach is to hand paint on wear with a fine brush. I did this for a few additional chips by first applying a light colour to the chipped area, then mostly filling in the area with a darker colour (dark grey / brown).
While there was no AM parts for the kit, I did scratch up / add the following:
* A basic interior made from bits from the spares box and some evergreen strips
* Replacement Jerry can racks, made from wine bottle foil. I used the spare jarry cans that come with the kit for the side racks and also added a third at the rear of the vehicle.
* Antenna made from a length of guitar string
* P. S. P. plating / sand tracks made from evergreen strips
* Wire grab handles on the turret
* Tissue on the spare wheel cover and gun seats for additional texture
* Ammo box from the spares box for the front of the vehicle
* (the mirror was supplied as in the kit)
You can see the finished interior and the unpainted additional bits in the following photos:

Thanks again for your feedback, it makes it all worth while!
Cheers,
Ian