1 Download the birth registration application form âto register your baby's birth you will need to print, complete and sign your application, complete the birth certificate application form and pay for it (if required) and deliver to us by post or in person.e will only process the first registration application that you submit. Processing your babyâs registration and birth certificate application forms can take up to 10 business days. If you apply for a birth certificate when you register your baby's birth (you can do this online), we will post the certificate to you.