Baby is a wonderful creature that God has given to us, no matter how they look, what color etc baby just adorable for our eyes, some times we said to people who doesn't smile when they look cute baby its must something wrong with their brain. I love photography and exited when taking picture of baby especially new born baby, it like cure for my soul, indeed. who doesn't like cute baby? 
sometimes people get scared when they want to take picture of their new born baby with professional photographer, maybe because the studio flash or some harsh light expose baby eyes? maybe, but you can do some trick if you concern about that issue, just take the picture when they sleeping, simple just like that.
You can take a photograph of a baby from 5 day after born and so on, 1 month, 2 or three month it up to you, but some stage you need to concern on his behavior, you cannot put in the bucket a baby older than 12 month or bigger, they start to cry or feel uncomfortable in the bucket.
Don't rush to change baby cloths in one time photo session, it will make the baby uncomfortable and starting to cry or not cooperate in the photo session.
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