The most common business card size is 84 mm by 55 mm, or 3.5 inches by 2 inches. You can go bigger, but if you do your cards are less likely to be kept. If you go smaller, you have a better shot, as long as they still fit in a typical card folio. Any non-traditional size is going to cost you more money.
Most business cards are paper, although there are lots of other options, from plastic and wood to metal and slate. Assuming you go with paper, you need to choose thickness, coating, color and weight. All of these can affect the price.
Special finishes can make your cards stand out. Metallic ink, foil blocking, and spot-UV are special finishes that are perfect for helping your cards stand out in a crowd. These details can maintain a simple, classic look but add a level of elegance and memorability to your business cards.
Turn your brand values into a business card design. Do this by thinking about the customer you’re trying to impress, and deciding what would tell the story of your business for that customer. Your images (if you use any), colors and textures should all be consistent with your existing marketing materials, and all of those should be right in line with the brand values that distinguish your business from everyone else.