They say the first impression that counts, it is important to stress with a good image and a good business card design is a good marketing tool. You can use it to promote a service. There is no size determined to make a business card, we can see on the internet a lot of different sizes and types of cards you can find round, square etc. all the information you should have a good business card as name, email , blog or website and logo.
To make a good business card color is also important here see 30 useful examples of business card design in blue, it will be very useful to enhance our creativity as we will inspire