Hi Blouie,
Like others have said, I wish my first tank looked this good
Let's see, if I was building it from as shown, I would de-shine the tools. One doesn't want anything shiny on one's war machine. Shiny can draw attention, attention can draw fire. When I look at heavily used tools, I see metal that is a dull color from stuff embedded and corrosion. I mix browns and grays into my steel colors for painting tools. Same for tracks.
Before commencing weathering, decide where your vehicle has been. Has it just come off the freight car transport and seen no action, or just off-load and been in an artillery/bombing attack that chips and holes it, but otherwise not messed it up much? Has it been in a battle or two, or has it been through weeks of fighting? Something I've read on-site is that rust streaks take weeks and months to reach the lengths you show. The vehicles at Aberdeen Proving Ground last year--few had streaks as prominent as what you show, and most haven't been painted in years. So go easy on the rust streaks.
When I am curious about weathering I take a look at the bulldozers at a construction site.
The spare track links? They could be fresh from the supply depot (nice-N-neat), they could be salvaged (rusty), they could have been on when the AFV was painted and thus the same color as the vehicle.
OK, enough of my blather. IMHO, one of the best articles on site is
Weathering HeresiesHere are some I find useful:
"Over-Weathered" Tanks Color Interpreting On M-3 Stuart Color Perception, Color Guessing, Scale Effect German Primer Red and Boxcar Red