The newborn phase is very brief. In a few short weeks after your baby’s birth he/she will begin to become more alert. They will begin to fill out and just like that they are no longer a newborn. For newborn studio portraits it’s important to photograph newborns within the first 3 weeks of birth. In my years of experience I find the 2nd week to be the sweet spot. In order to pose a newborn they must be sleepy and relaxed and still flexible for posing.