Ten Common Mistakes in Business Card Design
5. Crowd the edge of the card.
Margins are for suckers: your business card will have text right to the edge.
6. Use as many fonts as you can.
What are all those fonts on the computer for, anyway? Show the world how creative you are!
7. Never use the back of the card.
No, don't even consider it. That's the sign of the devil, or something, having a Twitter handle on the back of the card. Just cram everything in the front. . . oh sorry, that's #1.
8. Don't include all your contact information.
Yeah, you have a blog and a Facebook page, but why would you put that on your business card? It's not like you want people to find them!
9. Ignore your company colors.
Your company logo is in green and orange? So what, if your favorite color is purple go ahead and use that for all the text. Who's the graphic designer to tell you it's clashing? It's your card, isn't it?

10. Be bland.
Your business card reflects your personality and your business, so your boring black-on-white card makes you look just as boring as you are. What's wrong with that? Better yet, take your sister-in-law's card design and just swap in your contact details. Why should your business card be original anyway? Your cupcakes store can totally have the same card as her accounting business.
If you want a cool business card instead, you might want to check out some tips here. And if you want to convince yourself that your business card is important, look at this video. (But really, don't believe them. Losers.)