Thanks for the comments/feedback 👍 Will hopefully do some wallpaper-sized images... the main reason I keep the pics down to 640x400 is that they look sharper and some of the blurring effects needed to get those photo backdrops in are too obvious at full-size , but I will include links to the larger images soon!
I updated my 'panoramic' pic with the 'fullsize' version - although it had to rescaled because it was too big for Imageshack
No, I think I have a slightly older version of PS... 7.0? It's the only one I have a licence for here at work, so I don't think I have Supernova... I use 'Render>Lens Flare' for all my headlight effects - sometimes the 'lens flare' is a bit over-the-top!