Thanks for the comments, guys.
Mike - I agree with your comments about the light. Time of day plays a very big part. I'm also looking at laying my hands on a few filters over the next few weeks. First up, a circular polarising filter.
Would I be right in saying that guy's monochrome image is an HDR?
I'm not familiar with that technique....but I'll have to swat up. It's an excellent effect.
Thanks for the feedback. I appreciate it. I'm enthusiastic about improvng my terrestrial images.