Exercise: positioning the horizon

The aim of this exercise was to take several pictures of a horizon, placing the horizon in a different position in each picture.
I struggled to find a clear horizon, in my head, i pictured a clear view over a lake, or a picturesque mountain , alas, i had neither and so tried to make the best of what i could find.
As the cold winter nights are drawing in, i headed out late afternoon to the biggest hill i could find to try and photograph the malvern hills in the horizon, whilst the sun was setting, and the bright orange sky was peaking between the cloud cover.

The first picture of the horizon i took, i tried to take naturally, i didn't really give the position much though. The horizon line ended up being just below the centre of the frame.

I then took a picture with the horizon close to the bottom of the frame, i really like the position of the horizon here. The picture is made up mainly of sky, making that more the focus than the horizon. I like the textures and the different colours in the sky, it makes for an interesting subject.

Here i took a picture of the horizon, getting some trees in shot, the depth of the photo, and the large foreground, again takes the main focus away from the horizon line.

Here i tried to get the horizon towards the middle of the frame. The huge amount of texture in both the sky and foreground tend to draw the eye into the center, the still, smoothness of the horizon.

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I tried to get the horizon as close to the top of the frame i could, but found this slightly problematic, i was not taller enough to do so whilst looking through the viewfinder, and the attempts i made by just reaching and aiming weren't very good, they were either lopsided, or id taken a picture of purely sky. I didn't have much time as the light was closing in, and so this was the best i could do, slightly above half of the frame.
The higher positioning of the horizon creates more depth in the foreground.