 Open Photoshop with picture  Add a new blank layer and call it “Template”  Select the Rectangular Marquee tool with Style: Fixed Aspect Ratio in the Options bar  Drag a square selection over a face in your image  Go to Edit> Fill> Use: White  Reduce the opacity layer to 50%

 Go to Edit> Transform> Rotate and rotate the layer a little so that the square is tilted.  Double-Click to commit the transformation

 Select the Template Layer  Ctrl-Click the Template layer thumbnail to make a selection from its Transparency  Select the background layer and place the cursor inside this selection on the main image  Right-Click and choose Layer Via Cut  This will cut and paste the first square image on another layer

 Return to the Template layer, and Ctrl- Click the Template layer thumbnail to make a selection form its Transparency again.  Go to Edit> Transform> Rotate again to rotate and move it.  Commit the transformation and return to the background layer.  Again right-click the selection on the main image and go to Layer Via Cut.

 Repeat Step 4 until the entire image is divided into small squares.  NOTE: It is very important to work on the correct layer for each part of the process.  Make sure some squares overlap to help tie the picture together.

 When all the cuts are compete hit Ctrl+Shift+N to add a new blank layer, and call it “Fill Layer”.  Choose a light color for the foreground swatch and go to Edit> Fill> Use: Foreground Color this will create the background.  Go back to the Template Layer and change the opacity back to 0

 Click on the topmost cut layer in the stack and then Ctrl-Click that layer’s thumbnail to generate a selection from it.  Make sure the foreground color is white and go to Edit> Stroke.  Enter 20 pixels for the Stroke Width and choose Inside for Location.  Repeat this process for each of the cutout layers, stroking the edges of all the separate images.

 Click again on the top layer in the stack and click on the Layer Styles button at the base of the Layer palette.  Choose Drop Shadow from the list.  Experiment with the Distance and Size sliders for the best effect.  Click OK to apply the Layer Style.  Right-Click the Effects panel attached to this layer and choose copy layer style.

 Now Right-Click the rest of the cutout layers, one by one by choosing Paste Layer Style form the pop-up sub-menu. This will apply the drop shadow to each of the layers.  FINISHED!