Well-designed mockups like this one give you an opportunity to offer your clients a nicely detailed preview of what they ordered. You can use them to design with purpose. In this mockup, you can see two stacks of business cards that can be used to showcase both the back and the front look of your card.
To make the scene more realistic, there are also a keyboard and a mug that can be seen. You can download the fully layered PSD business card mockup right now and add your touch to it via the smart layers in a matter of minutes.