The baby’s name, birth date, birth time, location, name of the parents, and an expression of gratitude by the parents are some of the common things to include. As far as the wording is concerned, it completely depends upon your preferences. Earlier, it used to be in the third person, mentioning the parents’ name first, followed by the baby. But the less formal announcement is more common these days. So, try to be lesser formal and, at the same time, a bit creative.