Your newborn or toddler should be the only person in the picture, and he or she should be staring directly into the camera with their eyes open.
Place your infant on an off-white or plain white sheet. This will guarantee that your baby's head is supported and provide the picture with a simple background. Make sure your baby's face is shadow-free, especially if you're taking a photo of them from above while they're lying down.
You can take a picture of your child in the car seat with a regular white or off-white sheet over it. Additionally, this will guarantee that your baby's head is supported.