Update! Turned my robot copper metallic in ZBrushCoreMini and then took a jpeg of it. I then imported the jpeg into Clip Studio Paint and gave it some well need detailing.
Check it out on a T-Shirt here - https://geltium.square.site/ or go straight to it here - https://geltium.square.site/product/rusty-the-robot-unisex-t-shirt/126?cs=true&cst=custom , You can also find your way through my socials in my bio.
Enjoyed making this robot head. Still want to do more with it but I am happy with it right now.