This is an image I took the other day of some color pencils I had lying around.
I started with the picture on the left (see below), and edited it to what you see above. How I made the change is as follows:
I duplicated the image layer, and set layer mode to value (that way the color stays the same, just the luminosity is affected). Then I increased the contrast of the new layer with the levels tool, and merged the layer down. Then I lowered the saturation, and duplicated the layer (I now have two layers). On the new layer, I did a 5PX gaussian blur, set the layer mode to overlay, set the opacity to 20%, and did a merge down. Finnaly that I applied an unsharpen mask with a radius of 5PX.
(If you click on the image you can more clearly see the difference between the two)