In Photoshop CS.
||Cropped base from hires_hunks.
||Duplicate base, set to Soft Light 100%.
||Texture by Tre, Color Burn 100%. Erase the parts off his hair and skin.
||On a new layer, stamp visible (CTRL+ALT+SHIFT+E). Filters >> Sharpen >> Unsharp mask >> 60%.
||Duplicate top layer, set to soft light.
||On a new layer, stamp visible (CTRL+ALT+SHIFT+E). You'll use this in step #08.
||Create a new layer, fill with white. Stamp this brush (by ewanism) in the center (color: #CECECE).
||Drag your stamped visible layer from step #06 up to the top. Resize it so it fits in the grey square in the center.
||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.