I was thinking about it but i wasnt sure if it would work....i guess ill try it then thanx

For a old, run down, dusty look, I've found that a water based grey clay works well (the kind you'd use in a pottery class).

Mix it with a little water to make a clay wash, then just use it to paint any areas you want to look dusty.

The bonus of using this over actual dirt or dust is that once it's dry, it won't move.

or for stains etc use a teabag rub it while its wet on some parts of your set that will make it look old