I have also blitzed the Grizzly adding some oil fading and streaking to the model as well as some micro chipping here and there. After a matt varnish I sprayed tamiya buff and flat earth around the hull and wheels as a base for further dusting. I then began adding all the shiny bits using canopy glue and a steady hand. The turret cupola vision glass looks rather good and I am pleased with the overall effect so far.
The next stages will involve some pigments and some fuel staining and that should be about it. I am planning on making a small base plus a figure for the model so some work has started on planning that.