Some images practically demand to be taken to the next level of artwork. Here you'll find examples of the treatments that can be applied to your photos. They include:
Black and white: many photos lend themselves to conversion to black and white, and there are as many styles as there are photographers!
Sepia: for a timeless look that invokes an historical feeling
Cyanotype: the same process that creates blueprints can create a blue-hued photo for you.
Textures: these run the gamut from a simple canvas look to retro grunge or soft dreamscapes.
Digital Noodling: my own name for what happens when I get turned loose on a cool photo. Sometimes they look like paintings, sometimes they defy convention.