The most important thing a newborn baby need is a sense of calm, warmth and security. All this he receives from his mother, if feels like it there, if you talk to baby a gentle voice, gently pressing his to his chest (after all, your heart beat, he heard all of 9 months. It is a native, familiar sound that indicates the security).
Make eye contact when the baby is awake. Talk to the baby as if he had an equal interlocutor. When you swaddle your baby or dresses up do not do it cold or sweaty hands, as the kids are different tactile sensitivity.