Steps:
1. Spray Black for the Base(Undercoat)
2. Stensil: Anti Slip Mat. any other suggestions?
3. then silver or gold is nicer on the top?
4. Thin layer of black
5. Finish it off with 1 or 2 layers of clear coat.
You guys got the basic ideas but real CF have the 3D effects...
http://www.zerotohundred.com/newforums/attachments/do-it-yourself-garage/254554d1257174614-diy-honda-ek-cf-fuel-cover-fuel-cap-close-up.jpg
So i suggest the following steps....
1. Spray Black for the Base(Undercoat) Flat black
2. Clear coat 2-3 layers glossy thick
2. Stensil: Anti Slip Mat or mesh
3. then bronze metallic is on the top
4. Thin layer of black
5. Finish it off with 2-3 layers of clear coat
The additional steps will make the bronze metallic like floating thus achieving the 2.5D look.
TQ
P/s: spray some "temporary spray glue" on nonslip mat, so that any curve/uneven areas will less gap... (can get from stationary shop or art and craft)... when spray on paper the glue becomes like
"post it" note glue...