Thanks to Scott's video I just checked this thread out. The base is really excellent.
As far as the tank, (which looks great) if this were mine, my next step would be applying the decals. I might even very lightly mist a thin yellow to tone down the bright decals as well as the contrast between the camo colors and tie them all together.
Then I would paint the details like the tow cables and machine gun etc. before going any further with weathering. That way everything gets weathered at the same time as the rest of the tank. Otherwise, they may look too bright and clean against a dirty tank. But like Scott said, how dirty did you plan to make it?
Spectacular thread, keep at it.
Ken