I always like ALL the shots and rarely can eliminate or pick one over another. I always submit one and if it makes the cut, I don't vote for it so that leaves 5 when I am in the contest (this month mine did not make the cut so it was harder). Since we are planning on a calendar, I look at the photos with that in mind and see if one stands out as unique or colorful for the calendar use. Unfortunately, sometimes that fails and I am floundering for an additional thought to either pick or eliminate
That's the idea, however DO NOT think you can simply take a picture off of the internet. Pictures MUST BE your own, also remember that these pics are for a calendar so get stuff that would look good there.