The idea is to show an altered photo - anything you choose and any altering.
In Birch Bay, WA there are driftwood sculptures that line the beach - some elaborate - some simple. Winter is the best time to get photos of them, as the blackberries and grasses grow so tall they sculptures can't be seen as well in the summer.
This piece of wood looks like a whale to me - see the eye?
In B&W the shapes seem to stand out even more. . .
Close up of the cup lichens on the front of the piece of wood. . .
Don't you think that B&W really sets off the details?