When I work on the right mandible, I like to break it up into upper and lower areas. The upper area has the most detail, and it really helps nail down the look of Fett's "face." So getting it done is a relief!
Here's a collage showing how I build the detail in three main passes.
Detailed the Borden piece while the ears are drying.
I begin by gluing the Borden onto a piece of black styrene. This blocks any light coming through, as the three holes are drilled all the way through.
Then I mix up a muddy looking wash and just slop it onto the Borden, blotting most of it off to leave it translucent. This gives the appearance of tarnished metal. After that I use a fine brush to add some silver chips.
I enjoyed seeing the Fett gear in the episode! I've always liked the ESB stuff better than ROTJ, but it was very cool to see it.
I think they did a reasonable job making it look like the original ROTJ, but with added Sarlaac damage.
I don't have any plans to paint one though.