You can find many designs and shapes of business printable cards. You can also make a design and outlining features of business card yourself. All you have to do is figure out what information you would like to pass to your client on a 3 and a half inch of paper.
Several people choose the folded business card approach for get more space to tell various details to their clients and business associates. You can obtain a variety of such designs and idea by looking for printable business cards online.
You can also alter the shapes and sizes of the design of printable business card to make it look more appealing. Do try to include a unique feature in your card which can make it stand out in the rest. You can try different types of techniques, such as embossing or using a glossy business card or plastic business card for enhancing the visual feature of your card.
However, your business card for official use might not allow you a lot of space to be creative. People usually put up the logo of their company and details at their official business card. The area where you can get creative is your personal business card. You can try lots of shapes, sizes, designs, background images, photos, embosses, outlining, tag lines, one-line statements etc to make it look appealing and interesting.