Take a photo, copy it, flip it, overlay it on top of the original.
Use this graffiti . . .
and get this.
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Tractor 1, take 1.
Tractor 1, take 2.
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Tractor 2, take 1.
Tractor 2, take 2.
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Sunflower and spider friend.
Double them up.
Really clever. It gives effects I would never have thought of.