This is my business card. I used the same vector based images for both this and my website and even the the same font. I wanted to keep a consistent look and feel for both my card and website to help identify that this was my website after looking at my card.
I used Adobe Illustrator to create a art brush with four different colors and then used the pen tool, which allows for precise drawing curves/lines, and created the vector lines. Then I imported the vector lines into Adobe Photoshop to add texture, drop shadow, and a gradient to the lines.