I confess to being inordinately pleased with how this turned out. Taking a photograph of rotting hulks on the Isle of Mull by DeFacto from Wikimedia, I gave it two coloured pencil treatments in Topaz Impressions. I inverted one of my muddy terracotta backgrounds so that it became blue. The final touch was to layer the photograph over the background in Photoshop’s Multiply mode.
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Take care and keep laughing!