This image was created using a technique that mimics watercolor painting. To create the effect in Photoshop®, first open the image and duplicate it; close the original image. Add a new adjustment layer and select Levels, make adjustments to balance the histogram; merge the down the layers. Add a new adjustment layer and select Curves, make minor adjustment to increase contrast; merge down the layers. Next duplicate (Command-J) the background layer; open the Filter menu and select Stylize-Find Edges and apply the filter. Once again duplicate the background layer (Command-J) and drag the copy above the Find Edges layer; set the Blending mode to Multiply and adjust the opacity of the layer to achieve the desired effect (50-70%) works well. This technique works best on images with a lot of contrast and sharp well defined edges. When printing use watercolor or high quality photo rag paper.
Remember its all about having fun and experimenting, you never know what works. Enjoy!