Okay, thanks, but I don't understand something...
"Just post a photograph you've taken matching the theme and we'll pick six people to go through to round two, then three to round three, and then the winner. "
Does that mean you'll only pick 6 winners from Round 1: Celebration to be able to enter Round 2: Memories and so on, or did you mean you'll choose 6 images in each rounds that will enter the judging rounds?