The overall effect is quite refreshing, we remember to hand in the homework, there is no place to understand the post on the thread, as for the principle of color matching, there will be moderator one by one analysis, please wait patiently!
Let's look at the original image and effect.
The first step: use Photoshop to open the original image, copy one layer (layer 1), into the portraiture filter for grinding and slightly brighter, if not please look at my previous
PS: Layer 1 above the creation of layer masks, except the main body part of the other places are wiped out, or other places will be blurred, you can see the final screenshot on the layer display:
Step Two: We first stamp the layer to get Layer 2, any in the use of Noisewarepro filter to add some texture to the character, after the operation as shown