I came back to look at this a few times, which prompted me to want to give some feedback.
The horizon isn't level. At first I was thinking this was a result of cropping with lens distortion on the right, but I think it's just that the horizon isn't level.
While the ground and sky aren't evenly split, they also aren't following the rule of thirds. I personally think the foreground is more interesting than the top bit of the sky in this, so I would consider cropping out some of the upper portion of the pic. There is nothing on either side that is vital to the image, so I don't think this would adversely affect the elements within the composition. For *most* images of landscapes with a very clear horizon, you should decide whether the sky or what's below the horizon is more important to the image and then go with it. Having them both roughly equal usually doesn't work well.
Take this with a grain of salt. Enjoy your new body!
Thanks a lot for the feedback. It was a bit of a throw-away photo at the time. It was majorly over-exposed and I didn't really expect to get anything out of it. But I had a fiddle in the Lightroom anyway and (the colours, at least) turned out okay.

I've had a go at splitting the sky and land 1:2 respectively, as well as levelling the horizon. It's still nothing stellar and the 8MP resolution doesn't allow for much in the cropping department, but it's definitely an improvement. Feedback is welcome again, of course. I guess at the time of shooting it was a case of my brain thinking "I don't know which subject is more appealing, so I'll split it 50/50". That's the beginner in me - my brain still needs time to be re-wired in to photography