Most outdoor photos can be improved by doing a bit of work on the sky. I don't know why it is, but skies out of camera look insipid, particularly if, like me, you shoot raw files. In most cases a levels adjustment will perk up the sky. In order to do this you need to select the sky for the adjustment. There are various ways of doing this, for example you can use the quick select tool and maybe apply a feathering of the edge. (Select, Refine). However if there are hard edges present, e.g. the built environment, this might not be appropriate. You might then consider using more precise selection methods, for example the Polygonal selection tool or the Pen. Both of these tools require skill, time and patience. Quote often there are both soft and hard edges, when quick select accompanied by a more accurate method can be employed. In that instance it might be necessary to feather the soft edges by painting on or erasing from the layer mask [2], e.g. where there are trees etc. There...