Create your own Google+ ID card at Hangout Graphics. If you haven’t joined Google+ yet, sign up. To get your own ID card, you will need to provide your Google ID number, and the date you joined Google Plus. Hangout Graphics will then spit out an image after you click submit. Finding out your Google ID number takes a little bit of searching. I found mine under Google+ Settings > Privacy. Getting the date when you first joined Google+ is the tricky one. I ended up digging in my email to look for then message when I first got the Google+ invitation.
Get your own Google+ ID card.