Creating A Sketched Effect
This tutorial will teach you how to create a sketched effect in Adobe Photoshop.
You can use your own image, or use this sample.
Step three - Select the newly duplicated layer and go to image>adjustments>invert.
Step five - Still with the layer selected, go to filter>blur>gaussian blur... Play with the radius attribute to get it right. For this I used 2.2.
Now you're done.