How to change the size of the work canvas in Adobe Photoshop CS2

To change the size of the canvas 

1. Choose Image> Canvas Size

    

2. Do one of the following:

•     Enter the dimensions for the canvas in the Width and Height boxes. Choose the untis of measurements you want from the drop-down menus next to the Width and Height boxes.
• Select Relative, enter the amount by which you want to increase or decrease the size of the canvas. (Enter a negative number to decrease the size of the canvas.)

3. For Anchor, click a square to indicate where to position the existing image on the new canvas.

4. Choose an option from the Canvas Extension Color menu:

• Foreground to fill the new canvas with the current foreground color
• Background to fill the new canvas with the current background color
• White, Black, or Gray to fill the new canvas with that color
• Other to select a new canvas color using the Color Picker

5. Click OK.

      

                                                 Original Canvas         Canvas added to right side of image using the foreground 

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