The photograph you use will make all the difference. I recommend (for guys) a top hat and clear welding glasses. For girls, well, I’m unqualified, but there are tons of steampunk fashion sites online.

I decided to use the photograph that I use for my social media profiles so people would recognize me. I probably someday will take on the time-traveler look and change the photo!

One idea I had recently was to re-do the card but include a washed-out background with a dirigible floating and remove the triangular seal. It would then look like a “passage card” (ticket)

You might want to add some text to indicate you are “time travel certified” or something like that.

Have fun!

Of course you mileage may vary.