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Create a new blank document, File New (or Ctrl-N). Title the document background, set the height and width of the document to 150 pixels, set the resolution to 72 dpi, and choose the RIB color mode. |
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Now select a shade of sky blue as the current foreground color, and leave white as your background color.
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 | From the Filters Render menu, choose Clouds to fill the frame with blue sky and puffy, white clouds. If you don't like the effect you get, press Ctrl-F to reapply the filter until you get an effect you are happy with. |
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Use the Brightness/Contrast (Image Adjust Brightness/Contrast) Controls to add a little dazzle to your background, and make the clouds stand out more. Now you should have something like the picture shown below.
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Now you need to make it so it is seamless, Use the Filter Other Offset command to shift the image around in the frame, moving it 75 pixels down and 75 pixels to the right (half the height and width of the original image). Make sure the Wrap Around button is selected also. See the image below for an example of how it should look now.
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Now select the Rubber Stamp/Clone tool. Make sure the clone Aligned is selected in the Options palette. Choose a fairly large brush size from the brushes palette. |
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Click somewhere in any of the four quadrants, then clone a bit of that area over one of the center seams. Repeat until you've gently obliterated all traces of the seams, producing a uniformly cloudy frame. Try to avoid cloning around the edges, since those already are seamless. Now you should have something like the image below.
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That's it your done with your seamless background, now save your work and put it into your Web Site.
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