Trick Photoshop

Step 6 : Change the Foreground Color to Black by clicking on the small bent arrow.
Step 7 : Remember you are on the Background Layer. Press ALT+Backspace. This will fill the entire Background with the Foreground Color which is now Black.
Step 8 : Click on Layer 1 now. Then click on the Add Layer Mask button and a Layer Mask forms next to the layer thumbnail on Layer 1.
Step 9 : Click on the Brush Tool. To make the tip bigger press ] (right bracket) and to make it smaller [ (left bracket). To make the Brush soft press SHIFT+[. Alternately to make it hard press SHIFT+]. You need to have a soft brush. Look at the top panel on the left. This is how a Hard Brush Looks like.And this is how a Soft Brush looks. You can easily make out if you are using a Hard Brush or a Soft Brush. In this case we will be using a Soft Brush.
Step 10 : I have painted all around the face with the Brush Tool so that the face only is visible.
Step 11 : Now click on the Layer thumbnail of Layer 1. A small frame appears around the layer thumbnail indicating that it is now selected.
Step 12 : Press+U. This will bring up the Hue/Saturation dialogue box. Preview at the right bottom will be checked. Also check Colorize. Then give the settings for Hue and Saturation shown here. Click OK.
This is how my image appears.
Step 13 : Click on the Gradient Tool.
Step 14 : In the top panel make sure that the first Gradient in the Gradient Editor is selected, then click on the third icon. It is the Reflected Gradient.
Step 15 : I am dragging the Reflected Gradient from the tip of the nose to the forehead.
Step 16 : This is effect I have got. Some brightness has been added.

Step 17 : Now use the Brush Tool to gently paint the eyes.

The eyes appear to have brightened.

Step 18 : Click the New Adjustment Layer button at the bottom of the Layers palette and a pop up will appear. Click on Curves. This will add a Curves adjustment Layer.
Step 19 : Now change the Blend Mode from the pop up to Multiply.
The image darkens immediately.
Step 20 : Click on Layer 1.
Step 21 : Grab the Lasso Tool.
Step 22 : Draw out the portion to be 'torn out'. Make sure you leave enough space at the top for the other face to be seen.
Step 23 : Make sure that the Foreground Color is Black.
Step 24 : Click on the Layer Mask in Layer 1. A border appears around it indicating that it is selected.
Step 25 : Press ALT+BACKSPACE and the selection will fill with the Foreground Color which is Black. Press CTRL+D to deselect and the 'marching ants' will go away.
Step 26 : Go to Filter>Brush Strokes>Spatter.
Step 27 : The Spatter dialogue box fills your screen. In the right hand panel note how the edges become more jagged.