Announcement cards and how to learn the basics
You can add anything you think appropriate in the cards. However, keep in mind the person to whom you are going to send the card and write your message according to that. If the mother is a working lady, she can write to her colleagues when she would be joining them at work. If you do not have good idea about writing birth announcement cards, try online birth announcement wording. There are also great ideas for baby announcements on the internet.