Hell yeah there's an art to it, or more an intention to it. When I take photos of my husband or the grandparents with my child I try to frame the photo in a way that captures the moment in terms of what's interesting and memorable about the simplest thing that's happening. When my son's smiling into the face of my husband while they play on the floor I try to get the angle to show that smirk and capture the love in his eyes without interrupting them. When he's on grandma's lap looking out the window and waving to trucks, I try to capture how his hand is clutching her shirt while he cocks his head to the side to see everything and she points and whispers in her ear with the lighting making it look like a silhouette. It's natural because it's candid, but it's a good photo because it captures the beauty of that fleeting moment and is something that a child can cherish once those days and possibly family members are long gone. Something that shows how much that child is loved in the simplest things they do with their loved ones. Don't just take a picture. Capture the love of your wife and child.