What we will be creating:
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Step 1

Create a new document sized 1200px*800px with a dark grey background, create a new layer with around 30% layer opacity, and paint some grunge patterns around the canvas:
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Duplicate this layer once and flip the duplicated layer horizontally, you will have the following effect:
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Step 2

Now lets cut out the face portion from the model image we downloaded use the Pen Tool to draw a path and make a selection as shown below:
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Set Feather Radius to 0 pixel, and press OK:
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Use the Refine Edge filter (Ctrl + Alt + R) to smooth the edge a bit:
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Copy and paste the selection onto our document, resize it to fit the scale:
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Step 3

Now lets get to the fun part of this tut masking the face! Use the brushes you downloaded as eraser, erase some parts of the face off via layer mask:
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Left Side of the face:
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Top part of the face:
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Right side of the face:
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The above screenshots are indicative only of course you can experiment different brushes and see what result they will bring you:
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Step 4

Now lets add some image adjustment layers to this face apply the following 3 adjustment layers as clipping mask to it:

Black and White
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Erase the following area on the black and White adjustment layer mask to reveal the lips and parts of the eyes:
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Levels
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Curves
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and here is the effect so far:
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Step 5

Lets add some further touches to the face firstly, I add some tear drop mark to just below the eyes using a small, soft black brush:
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I used the cloud filter, added some cloud around the face area for some dramatic effect:
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You can also add some particle paintings around the head area using some particle brushes, as shown below:
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Step 6

OK for some final adjustments, I flatten the image and duplicate the background layer, apply the following Reduce Noise (Filter > Noise > Reduce Noise) settings to the duplicated layer to sharpen the image a bit:
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Add a new Selective Colour adjustment layer to apply some colours onto the image:
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For the selective colour adjustment, you only need to adjust the white, neutrals and black colours, have a play and see what result they will bring you:
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I used a warm colour scheme with red and yellowish colour, as shown below: