Fairy light

This effect works well with mystical themed wallpapers!

1: Create a new black (or dark colored) 1024x768 image. Create a new layer. On this second layer, use the line tool set at 4px and hold down the shift key to draw a straight, white line. Duplicate this layer 3 times. On the lowest line layer, Filter > Blur > Guassian Blur 8px. On the other layer, Filter > Blur > Guassian Blur 3px.

2: Select the top-most solid line layer and then Filter > Distort > Shear. Just randomly click in the Shear selection screen to create a curvy line. Right now, the line has some jagged edges. To get rid of those, Layer > Layer Style > Outer glow. Set the Outer glow to Opacity: 75%; Noise: 0; Color: White; Size: 6; Spread: 30; Range: 55 and make sure Anti-aliased is checked. Duplicate your curvy line layer and Filter > Blur > Guassian Blur 9px.

3: Now, this next part, you can either choose to make your own brush, or download the one I've provided here. With the brush I've provided, in a new layer, trace over the lines so that it looks like it does in the picture.