I will add to the effect by adding fine lines of lightened base colour to some of the larger chips but not all. Paint can be used to achieve some optical 'suggestions'. On this other guy's model, it gives a kind of 'thickness' to the base colour and pushes the chips optically 'under' the base coat as opposed to painted 'over' it. The process of adding the chips has been pretty time consuming but I like the effect. You'll note I haven't finished yet either...the fenders are still not done. It's all been pretty simple actually and not beyond the abilities of anybody here IMO. Here are some more.
ChpTurretTop.jpg
ChpLeft.jpg
ChpRight.jpg
Chips 1.jpg
Oh yeah...for some reason, Dragon include three five-part jerry cans in the kit but not the bracket to hold them on the fender. I made one out of a strip of aluminium can, found it was too big and made another, smaller one. I then glued on the one that was too big. I also found that the chipping effect didn't look very good until I added some scratches. The 'lines' scribed into the paint in random directions did the trick. Later, I will add a few chips and scratches in lighter base colour to suggest shallower paint damage where the paint is just 'bruised'. I will also pick out a few and add a very dark brown into the grey chips to suggest damage down to the metal. Here, I will have rust effects but that's for a bit later. Will post pics again when it starts to happen.
Peace.