1. Small Print: 

Is the text on your business card so small that you have to hand out a magnifying glass to read it? Be cautious about this activity. With a tiny font, you may be able to squeeze more information onto the card, but what good is it if people can't read it?

A reasonable rule of thumb is to select a type size of no less than 7-8 points. Your name point can be a little larger, for example, 9 points, and the firm name normally looks excellent at 12-15 points.  

2. Not Including Your Email Address and Website on Your Business Card Including Email Address and Website on Your Business Card:  

Many people prefer to send emails rather than make phone calls. People who want to learn more about your company typically want to do so without hearing a sales pitch. So, they go to your website and learn more about you.  

You might refer individuals to your social media accounts, but you don't own the pages or the contacts. Unless you buy advertisements, you have no control over what is shown to whom. As a result, if your email address and website are absent from your business card, you are likely to lose some business.  

3. Lack of a Differentiating Selling Proposition:  

Many businesses pass up a good opportunity to fully utilize their business card's marketing potential.

Your card should have at least one highly compelling reason why a consumer should do business with you; for example, an auto service center's business card that includes the phrases "complete automobile repairs" and "all work completely guaranteed" informs customers that the center handles all sorts of repairs and develops trust by mentioning the guarantee.  

4. Using an Extra-Large Card:  

The typical size of a business card is 3.5 by 2-inches. Common sense demands that you use a standard-sized card. Larger business cards will not fit in most business card holders or wallets. Smaller namecard are more likely to be misplaced or forgotten. An unusually large business card is likely to be discarded.