1. Create a new 300x400 image with a white background. Set the foreground to black and the background to a gradient of your choice. I used these settings.

Settings used:

• Gradient = Duotone Ivory
• Angle = 135
• Repeat = 0
• Style = Linear
• Invert = Unchecked

Use the Rectangle tool to create a rectangle in the center of the canvas. Make sure the width is set to 1 and Create As Vector and Anti-Alias are checked. When the rectangle is in place, convert the layer to raster.

2. Go to Effect | Distortions Effects | Wave... Use the following settings for both Horizontal and Vertical Displacement.

Settings used:

• Amplitude = 1
• Wavelength = 9
• Edge Mode = Transparent

Press Ctrl+A, Ctrl+F, then Ctrl+Shift+F to create a selection. Press Ctrl+H to Feather the selection by 8. Now Gaussian Blur by 2. Finally press Ctrl+D to select none.

3. Press S to select the Selection tool. Create a rectangular selection within the serrated edges of the stamp. Go to Effects | 3D Effects | Buttonize... and use the following settings:

Settings used:

• Height = 4
• Width = 4
• Opacity = 75
• Edge = Transparent

Now Gaussian Blur by 2.

4. That's it! To add your image, paste it as a new layer and resize it using the Deform tool. Don't forget to add some typography to complete the look.

Now you can start sending graphics to the web, first-class, with some slick postage stamps.