Now that is cool! I saw a PBS show where they made replica armor and showed a similar way of adding all the etching.
Currently: painting/finishing an xcoser Star Lord helmet. Base colors down, touch-ups & weathering next.
Can just barely see a couple Elder Wands in the background ready for paint.
Not pictured is Star Lord's leather belt WIP.
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Looking great! May I ask what color you used. for the grayish silver look you have your finger on?
Yeah, it's just Rustoleum's universal metallic spray paint, "black stainless steel"
It's not really screen accurate (the actual helmet has a slight blue tint to it), but it's good enough for this project.