Welcome to TDH Col. Chopper!
Really, the best way to get your amor to look like Jango's did in "Attack of The Clones" is to "RUB' N Buff" it!
This is a "SILVER" metalized polish that you simply "RUB" on with your finger and "BUFF" out and a little bit does go a long way! So basically get your armor back to an even coat of "Primer" or your "Silver" color that you were previously using, then sand it till it's really, really, smooth using a Fine Grit "WET SANDPAPER" (between 600 and 1000). Then apply the Rn'B starting at one corner and gradually work your way over each piece of the amor, then come back and buff out using a combination of your hand AND/OR paper toweling!
Rub N' Buff can be found at MICHAELS: Arts & Crafts or HOBBY LOBBY.
I hope this helps you and we hope to see your progress throught your build!
:cheers