For many years I created custom bartender business cards. I used professional programs such as Adobe Photoshop and Illustrator. But if you do not have access to these programs then no worries because today anyone can create his or her own on free design websites such as Canva. You can upload your own photos and custom design a card the way you want. When finished you can save and download it as a PDF. This file can then be sent to a local printer or online printers such as Vistaprint, Moo, or OvernightPrints. These printers also offer "make your own" sections where you can upload images to create cards.

Zazzle also has several pages of bartender business cards to personalize, so they are worth a look.

Girly Business Cards has a bartender section of cards.

And of course, you can also purchase cardstock paper and print them at home, but I recommend getting them professionally printed. After all, you don't get a second chance to make a first impression.