Step 6
Select the entire canvas using Select > All, then Edit > Copy Merged, then Edit > Paste. Drag that layer to the top, and hide the layer made up of four bars.

Step 7
On another layer on top of previous layers, create four even, coloured bars at a 45 degree angle, and make a selection of the masked surfer layer to erase any part of the lines that pass through the surfer so that the lines stop at his head and arm. Set the blend mode for the layer to Hard Light, and the opacity of the layer to 10 per cent.

Step 8
Select the entire canvas using Select > All, then Edit > Copy Merged, then Edit > Paste. Drag that layer to the top, and hide the layer made up of four bars.