The Process of Changing a Newborns Diaper You should not take lightly the changing of a diaper. For it to be done correctly, you need to take the time and do the proper steps. If not done so, your baby could end up with a diaper rash and more seriously, an infection. A clean diapered baby is a happy baby. To start, you need to know the weight of the newborn. With this, you will be able to find which size diapers will be appropriate. Not all newborns wear newborn diapers. You will also need to decide on which brand diaper you will want to use. ....