Creation of the sky behind the window and effect of the broken glasses.

• Paste image of the sky into the new layer.
• Place this layer under the window.
• Erase some parts of the window using small hard brush.
• Erase redundant parts of the sky.

The layers are done.

Colors' correction.

• Go to image > Adjustments > Variations, select cold and dark colors.

• Change adjustments in Levels.

• Repeat this actions for bricks.

Creation of dust effect.

• Click on Quick Mask.
• Select the areas which will be dusty.
• Click on Quick Mask again. Go to Select > Inverse.
• Fill the selected parts with grey translucent color.
• Erase some small areas of the dust.

• Draw a cobweb, I used ready brushes.

• Add a new layer.
• Fill it with gradient( black/transparent) Opacity 40-50%, Multiply layer.