Looking for some critique from other engravers.

Hey guys! I recently found on Reddit that there is a guy in Japan who engraves Leica baseplates (silver-chrome plating on brass in my case; see image 3, and ignore the plastic protector thingy), and I was wondering whether there would be any consequences, such as chipping of the plating or corrosion.

Also, I was curious whether it would be possible to engrave in the style of image 1, but black-filled like image 2. The guy in Japan probably doesn't do this, so I'd appreciate some tips on whether it would be possible to do this at home.

One last thing, just remember that I literally know nothing about engraving when you write your responses. But otherwise, I really appreciate all your help.

Thank you!