I read recently on Jim Goldstein’s site his post on photographing the unexpected. The thing that jumped out to me was he recommended keeping both eyes open when shooting:

One of the most common mistakes I see photographers make is to get lost looking solely through the camera viewfinder. If you are only seeing the world through your viewfinder you in essence suffer from tunnel vision… literally. Rather than only looking through your viewfinder be sure to use your other eye to survey your surroundings. Is anyone on the fringe of your photo that will either detract or add to your photo?

While I freely admit that I’m not sure about this all the time, it’s certainly something I’ll be trying.  Follow the link to his “Photography, the art of being prepared” post you’ll notice he comments on photographing a child.  I’m sure that’s where my practice will be taking place.