Light

Being Selective - What makes a great photograph is not a great subject, its great lighting. No matter how interesting or spectacular the subject might be, you wont get a good picture with out decent lighting.

Light is the biggest difference between a typical tourist picture and a photo that make you say WOW ! The tourist usually shoots the scene in whatever light is available at the time. Where a Pro has the patience and perseverance to wait for the light to be right, sometimes returning to the location repeatedly in search of the best light -