Well here goes:
I used TK-7602's paint list (mostly krylon sprays).
I masked the damage, removing it between coats. (re-apply when ready to move on).
I weathered the helmet with a mixture of windex and water, mixed with chalk (black, brown, white, tan) in various amounts. I mostly used my fingers to wipe in the "muck" as I call it, and then wiped the surfaces with clean cloth. I feel using chalks give a more "natural" weathering look to the items.
Since I will use the same techniques on all the Fett items, they will all match for the same "weathering" effects.
The windex gives the paint that "two-tone" look. If you let it sit in places then wipe it off, for example the green, wherever the stuff was sitting will turn a lighter green than the surrounding area (no chalk in this mixture). Testors "Dull Coat" was used to seal in everything.
The Rangefinder was scratchbuilt - with hyperdyne electronics installed.
I am waiting for my circuit board from Bobamaker to attach to the back. I still need to install the servo equipment to make the finder go up and down remotely.
Also - I am stripping out the "guts" of a batting helmet to make a liner inside.
There are finer scratches and other detail that doesn't show in the pictures - looks darker in real life.
All in all - I'm pretty happy with the results.