"Horizons can be quite divisive, both in terms of composition and opinion. If used correctly, a horizon will either add to a composition or go unnoticed, however, if positioned poorly, it can become a competing element, distracting attention away from the main areas of interest.
One of the main ‘rules’ you often see written regarding horizons is that they should never be placed in the centre of the frame, but positioned closer to a ‘third’. As with most rules, there are plenty of times when this can be completely disregarded, so here are a few guidelines to help you to decide where to position the horizon when composing your shot. [...]"