go down to the second set of pics, and you can see how i have the collar and backplates connected...i bought some collar studs from Serenity, aluminum, and they work perfect! the collar studs in the pics are made by me, prior to that purchase...let me know if you need any more help...
Here are two screen shots from ROTJ that show it. Well, one pic shows the back plate popped out, was during action... but you can see how it was never secured permanately.