To find a viewpoint outdoors that gives you a reasonably interesting landscape in which there is an unbroken and clear horizon. View the scene through the camera and consider the different positions in which you can arrange the horizon line in the frame. Take a photograph of each so that you end up with a short sequence in which the horizon is ranged from top to bottom.
Finding an unbroken and clear horizon is almost impossible here in Vancouver where I live as the city is surrounded by mountains, water and in the distance, islands with more mountains. So I headed down to Ambleside beach, one of the very few places where I could get a semblance of a horizon, albeit with mountains in the far distance. My outing was squeezed in between rainstorms, so the scenery is not as vibrant as it can be on a bright, sunny day. The peninsula that is jutting out on the horizon is Vancouver West and at the very tip the location of the University of British Columbia. In the distance behind the ships is Vancouver Island with its mountains.
I took a series of 6 photographs from the same position, hand holding the camera.
This was the highest I could get the horizon in the frame without changing position. There is a lot of sand and messy driftwood foreground in the photo, which detracts from the horizon.
With the slight decrease in the amount of foreground the horizon is receiving a bit more attention. A few more clouds are visible which also helps to draw attention to the upper half of the frame.
The foreground has decreased quite dramatically and the photo is looking more interesting.
In Figure 04 the horizon is in the centre of the frame. The photograph lacks tension and if it wasn’t for the cloud formation, would be very static.
With the horizon below the centre in Figure 05, the image is now beginning to develop a visual tension. More focus is on the sky than the foreground.
I would probably have been able to put the horizon on the final photo a little lower if I had changed my stance slightly. In comparing Figure 05 with Figure 06, it seems that I did, in fact, shift a bit, possibly one side step, as I now have a third log in view at the bottom right corner of my frame. However, I did not want to lose the figures in the foreground as I think they create an interesting anchor point in the frame. The boat that has just entered the frame also provides another point of interest. There is definitely more visual interest in the sky in Figure 06, with the rain clouds rolling in over the sea.
The horizon placement in these images probably work in each scenario, but I definitely prefer Figure 06, with the emphasis placed on the sky which has more visual interest than the grey sea.