Very postcardy, and technically speaking a beautiful shot. The only thing that kept it at 9 and not 10 for me was a lack of a certain spung, that magic 'Wow!' spark. But I have to save 10s for *something*, right? :-> The colors are also a little washed-out-feeling. Maybe if the whole were a little richer, less bright and gleaming-white (drop the gamma correction slightly, maybe), it'd have topped out for me. As it is it looks a little like the photo's faded.
Wonderfull symmetry in this shot. I find the image way too washed out. You have wonderfull colours to play with and they're down played a bit too much. This could be fixed by playing with Levels in Photoshop or Histrogram adjustment in Paint Shop Pro. Still worth an 8. Jacko.
Looks a little too wide in dimension for a postcard, and looks like it could use some levels adjustment to get rid of that hazy look and bring out the colors.
This seems like the brightness was increased a bit too much. I like the shot though and the text fits along great. It'd have been really neat on a windy day with the flags blowing. Overall this would be a great postcard, meets the challenge wonderfully, well done.