1. Choose two background papers (promote them to layers if they are currently a background layer...Do this by right clicking in your layer palette on the layer and choosing "Promote to layer" from the menu)

2. Use the selection tool (rectange, 0 feather, antialias checked) to cut away all but the strip of paper that you are going to use for the top, torn paper. (drag the rectangle around all you want to get rid of, then hit the delete button on your keyboard)

3. Use the eraser tool (Square, size: your preference, hardness:0, opacity:100, step:1, density:100) to go along the edge that you want "torn"...we're tearing it here, so don't make it perfectly straight.

4. Create a new raster layer (you can do this by right clicking in your layer palette and choosing "New Raster Layer".

5. Choose the paint brush tool (shape: round, size: your preference, hardness:100, opacity:100, step:1, density: 27ish). Color palette colors should both be set to white, texture: parchent, sponge, gravel or lava.

6. Paint along the edge of the tear.

7. Go to the layer palette and drag the active layer to the bottom.

8. Right click a layer in the layer palette and choose"Merge, "Merge visible".

9. Go to "Edit", "Copy"

Now let's go to the other paper (your background paper)

1. Go to "Edit", "Paste", "as new layer"

2. Move the layer where you want it

3. Go to "Effects", 3D effects, "Drop shadow" (v:0, h:2, opacity:28, blur: 8.5)

Save and you're done!