Exercise: Positioning the horizon

There is a natural tendency to place the horizon lower in the frame.  I personally would probably tend to have my horizon just below central, although it would depend upon each different situation.

However if the picture you have taken or are taking has a dramatic sky or interesting cloud formation you may want to make the sky more dominant, lowering the horizon.

Alternatively if the sky is uninteresting and / or there is something in the foreground that you want to highlight then raise the horizon.

My pictures above are undramatic in all aspects and having looked again at them I would say I prefer picture 3 ( I also quite like picture 2). As the sky is so blue I would choose the slightly higher horizon to add interest.

This finally picture is very boring and uninteresting as there is nothing going on in the sky to interest the viewer.  In this instance you would definitely not have the horizon that low.