I had a go at this to see if it was possible.
I found using two layers with different materials was easier, and having an alpha mask in the top layer with the shiny lettering underneath seems to be a good approach.
I think you should use a higher resolution texture, bump and rough map for a better quality result.
Also note I ended up using the rough map as an alpha map instead.
It’s not perfect, but it should give you a starting point:
https://cotterzz.github.io/embossedcard/