Filter Gallery is a great place to just play around with different filter combinations. I ended up with Half Tone and Posterize. I like the woodcut sort of look, but it also seemed too flat to me--so I erased the effect on the apple sitting on top.
...is to fill 52 themes, one a week for the year. Some weeks, maybe I'll try to find several photos to fit the themes. Others, I may spend more time trying to perfect one that seems best to represent the theme. Three years of a photo-a-day opened my eyes, now I want to hone my skills.