Birthday cards are not only easy and fun to make, but allow you to express a special message to someone. Whether it is a close friend, family or a co-worker, programs such as Publisher, Print Shop and online card shop have all the tools you need to make the card. Most require an 8.5 x 11 sheet of paper. Select the greeting, add your personalized message and print. Fold the card according to the instructions and you have just made your own personalized birthday card.