In this tutorial, I will show you how to spice up a fairly dull and flat photograph. It’s very easy and fast! Go from flat photo to a uniquely lit style.
Go to Filter > Render > Lighting Effects to make the light come from the top right.
With the tool that you prefer, create a selection of the part that you want to hide. For example, I used the Pen Tool (P) to select the sky and the buildings around the castle. With the selection active, add a Layer Mask.