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I would post what it looks like, but my computer is being naughty. *sigh*
EDIT: I got it to work!!!
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1. Open your picture in GIMP. This one is 482x158 pixels.
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2. Click the letter "A" in the toolbox. Drag it over your picture to create a text box. After you've written your text, choose your text color, font, and text size. I think that doing a font color really close to the background color looks really cool.
3. Click on the little cross-thingy in the toolbox and move your text to the place you want it to go.
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4. On the layers dock, make sure the text is selected.
5. Go to the top of GIMP and select Filters>Light and Shadow>Xach Effect.
6. This should pop up:
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Make sure it looks like mine.
7. Click "Okay".
8. There'll be moving lines all around the text.
9. Go to Select>None at the top of GIMP.
10. The moving lines'll disappear.
11. Go to File>Name your graphic>Save.
That's it!