As a proud parent I look at other babies and want to know if we are doing okay. (It's the first time and we have no standard to work from.) When two babies meet it is easy to overlook the needs of the other parent as you well up with pride in the achievements of your offspring. Photographers can be the same with their personal prides. Good etiquette with babies is to resist outdoing the other parent with the successes of your own child (sleeps through night ... makes own breakfast, gifted, etc). Because even though it is reassuring to acknowledge the superiority of your genealogy it has no social benefits (unless you have cities to conquer). Why do I mention this?  It's about respecting the success and pride of others. It makes the photographic community stronger and of greater value. Cheers, Johannes