It costs nothing to vote. Even if you don't think yourself worthy of entering (which is not true), why not have a look through some amazing pictures and pick the one that appeals to you. There's no need to analyse deeply, not need to try and understand why you like it. If you like it more than any of the other entries, then cast your vote. It's a simple as that. All voting is anonymous, no-one can see who voted for what.
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