scatch builing pilots for my snow speeder. Need help for some parts ..

hi all,
I got some 1/24 scale figures for my pilots . I want to get help on two parts..

First : ineed to make a copy of a chest panel from an action figure ... for my pilots .

Second: I can't find ribbon smaller than 1/24 inch. this will work for a belt .
I need to make the stap for the chest panel. s/b 1/16th. black.

on the action figure I have magic sculpt , but i dont know what i can use a a mold release .

I read an article about making "luvers" using non sandable non paintable silicon then with ? body filler . for the parts .

Any help on the 1/16 staps. and making a mold will be grate.
Sciencerly , nfpa1002