4) Avoid "snap" judging caused by initial sensory overload

Over the first 5 seconds of viewing, there are some photos that assault the eyes with beautiful bold colors, spectacular vistas, or captivating close-up views.  The mind wants to say "WOW!!" and the mouth wants to blurt out "DEFINITELY A 10!" (or whatever maximum your scoring scheme allows).

                                                     

Try to resist this urge and regain mental composure!  Photos of this sort are sometimes like a mediocre wine - they engage the palette but have no meaningful aftertaste.  A great photograph should linger in the mind and soul, and needs more than just technical flashiness or pretty scenery to do so.  Previewing photos helps one adjust to sensory overload, but I still recommend spending at least 10 seconds examining and commenting on a given image before rendering a numerical verdict!