Do not use the image above, use your own photo for this project.
With your image open, Duplicate the layer in the Layers Palette fly out menu
Go to IMAGE then ADJUSTMENTS and choose DESATURATE
Now Duplicate the desaturated layer.
Go to IMAGE to ADJUSTMENTS and choose INVERT
From the Layers Palette change the mode from Normal to Color Dodge. The Image will turn White.
Go to Filer the to Blur and choose Motion Blur. Gaussian Blur works as well. Adjust the slider at the bottom of the window to change the effect of the sketch.
Save the file as a .PSD file extension and then Save for Web. Post the web version to your blog with a paragraph description.