1. Open a landscape format photo of your choice. Resize it so that it is close to 400x300 (it doesn't have to be exactly that size). Create a New 1024x768 image with a White background. Press Ctrl+C to copy your photo, then press Ctrl+L to Paste As New Layer onto the New image.

2. Press Ctrl+A, Ctrl+F, then Ctrl+Shift+F to create a Selection. Make the Background layer active, then create a New layer. Go to Selections | Modify | Expand... expand by 4. Press S to activate the Selection Tool, then press the "Current selection" button found on the Tool Options palette. Press F to activate the Flood Fill Tool, and fill the selection with White.

Make the Background layer active, then create a New layer. Expand the selection by 1. Press S to activate the Selection Tool, then press the "Current selection" button found on the Tool Options palette. Flood Fill the Selection with a Dark Grey or Light Grey color (RGB 128,128,128 or 192,192,192)

3. Hide the Background layer, then merge the visible layers. Press D to activate the Deform Tool, then hold shift while rotating the image counter-clockwise. Rotate it to a 315 degree angle (keep an eye on the status bar).

Now for the tricky part. Hold Ctrl+Shift and drag the top corner slightly down. Drag the bottom corner slightly up until it looks like the image on the right. Next, release Ctrl+Shift. Drag the middle handle on the left side slightly to the right so that the photo does not look too deformed.

4. Duplicate the current layer. Go to Effect | Image Effects | Offset... use these settings.

Settings used:

• Horizontal offset = 1
• Vertical offset = 4
• Edge Mode = Transparent

In the History palette, highlight your last two commands (Duplicate layer and Offset). Click the "Save Quickscript" button found on the palette. Press the "Run Quickscript" button to add photos to the stack.

5. Use the Deform Tool to Rotate the topmost layer slightly counter-clockwise. Run a Color Filter like Automatic Color Balance to change the look of the topmost photo.

Hide the Background layer, then merge the visible layers. Add a Drop Shadow to the photo stack, if you wish.

That's it! Now you can create a Photo Stack.