This one worked out a little better, I think, there were clouds this time to capture and reflect the light, which makes it much more interesting.
Up until now I haven't put much/any time into editing or enhancing my photos, but I'm slowly learning more about it. I've attempted to liven up the colours a bit using the Levels and Curves tools in the GIMP. I also adjusted the saturation for yellow and blue on some of them and I tried sharpening the last two. And I added my name to them just to copy the professionals (does that make me a dork?). Let me know what you think. Is there something else that I should be doing? Should I just leave them alone?