Prepare your Hospital bag or First day at home
At the hospital: Remember to add to your hospital badge a full set of clean clothes for dad: T-shirt and jeans is more than fine. For the mom, find a robe or pijamas that make you feel comfortable and pretty (in case you don't want to wear the hospital's clothes).
At your home: Pick ONE spot at home with the best natural light. Clear it from all the items you might not want to have on the picture. I recommend to use a white or light color blanket/Duvet on your bed if you prefer the session at the bedroom. Same suggestions of clothes applies for home, you just have a baby! no need of fancy dresses or even makeup.
T-shirts with big logos
Strong colors on your makeup: Magenta and Orange mainly as they will affect your skin tone on the photo.
Strong colors on your nail polish
Sandals (unless it is a session at the beach)
Shorts (unless it is a session at the beach)