I photographed a week-old baby. There were several challenges, the first being lighting. Being immediately next to a window or under a skylight would be ideal, but the location wasn't the brightest spot, despite the uncovered windows. Electric lighting and flash looked awful on the baby, which made me wish I had more sophisticated lighting equipment, but I made do with my 100mm f/2.8 at ISO 400 or 800. This photo wasn't intentionally unfocused, but I liked the soft focus result anyways. The other baby challenge was waiting for the moment that he was awake with eyes open and not crying, and not being bounced to discourage crying. I had to be opportunistic.
Young babies tend to be a little mottled pink, which perhaps could be evened out with lighting? I'm not a big fan of pink anyways, so I prefer converting to B&W.
PS. I think I've just experienced Spam Comment Posting. Don't bother clicking on the comment below, it makes no sense, links to random sites and the profile of the user is empty with a nonsensical name.