Funky Borders

I'm going to show you how to use quick masks to make funky borders. here's the picture I'm using to start off with -

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Then Select a bit to crop away. The bit outside will be where the border effect will happen.

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Press ctrl+shift+I to inverse the selection.

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Then press Q. The area of the image you want to keep should turn red.

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From this point.. you really just need to experiment with different filters. I did a radial blur for the following example. After you apply the effect press "Q" to turn the quick mask into a selection.

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Delete the selection. This is what I got -

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And well... you've got a nicer border than the usual 1 px one. Experiment with the different filters you can apply to the quick mask. Here's another result I got after using the halftone filter -

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Here's one after using a different filter (I forgot which one)

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Hope you learnt a bit more about using quick masks. Register and leave a comment if you have any questions or improvements.