In Photoshop CS.
01.
Cropped base from
hires_hunks.
02.
Duplicate base, set to Soft Light 100%.
03.
Texture by
Tre, Color Burn 100%. Erase the parts off his hair and skin.
04.
On a new layer, stamp visible (CTRL+ALT+SHIFT+E). Filters >> Sharpen >> Unsharp mask >> 60%.
05.
Duplicate top layer, set to soft light.
06.
On a new layer, stamp visible (CTRL+ALT+SHIFT+E). You'll use this in step #08.
07.
Create a new layer, fill with white. Stamp this brush (by
ewanism) in the center (color: #CECECE).
08.
Drag your stamped visible layer from step #06 up to the top. Resize it so it fits in the grey square in the center.
09.
New layer filled with white. Draw a 1px border (color: #CECECE) around the edge of the brush and use a soft round eraser brush to erase away the middle of each line, leaving you with this.
10.
FINISHED.