I'm finally getting around to posting info on how I did some of the different aspects of my costume - I hope it doesn't sound presumptuous - just wanted to make sure I am giving back since I got so much from this forum!
Cris sculpted the moon shaped piece and hanging thingies from ren-shape. The renshape is fragile so he then molded them and made resin casts.
Here is a pic of my finished one next to a resin cast:
As you can see, the finished shape of the hanging parts is a bit different from the resin cast. This is due to the method used to hang them. We didn't want to cut the resin to fit the different pieces together so Cris 1) cut the top out of the circle - this left the top in a "U" shape 2) he put a wood screw vertically into each of the arms of the "U"; 3) he attached a wire to one screw, threaded the wire through the hole in the moon shaped piece, and then attached it to the second screw 4) he then used bondo to cover the screws and wire. We didn't take progress shots (our bad) so here is a drawing of what it looked like:
The original casting had a flat back on the hanging pieces. The new casting you see in the first pic above has two "half-casts" of the hanging pieces placed back to back. We are working on an easier way to hang them - maybe by sandwiching something between the two pieces. We are also wanting to use a method that retains more of the shape of the original resin pieces.
To attach everything together, Cris used a piece of aluminum bent in a hook shape. He screwed the little moon shaped piece into the aluminum (black arrow) and then used two screws to attach the larger moon-shaped piece (white arrow). The piece then just hooks over the top of the cumberbund:
I painted it using the same technique I used on everything else: flat back primer, Testor's silver spray paint. Weathered with watered down black Glossies acrylic paint brushed on and then sponged off. Here is what it looks like on the costume (The Boba is Boba Max and the Jango is Steve from Richies Armor):
Hopefully that made sense - feel free to PM me or post here if you have questions!