Go newbielink:http://www.deviantart.com/deviation/34483364/ [nonactive]
(zoom in to see) or read below (I figured it would be nice to type it up for you so I don't have to have you go searching too far just to read a smudged image; besides, this can easily be edited).
1.) Do steps 1, 2, and 4 (also look at step 3 to make sure you have your settings right) on this tutorial
2.) Duplicate your layer. Do Filters > Enhance > Unsharp Mask on the top one with the Amount slider all the way to the right in the settings. Set the top layer mode to Difference. Go to Layer > Colors > Invert. Merge down.
3.) Filters > Map > Displace, and displace the layer on itself. Gaussian blur 1.
4.) Filters > Map > Warp, Layer > Colors > Invert (only if it's a dark image). Select Incandescent as your gradient and go to and Filters > Colors > Map > Gradient Map.