1. Open an image.
2. Create x layers for x light streaks.
3. Use the pen tool to create curved paths. (For a more specific look, watch the video)
4. Go to the brush tool and select a good color and good stroke width. Then open up brush dynamics and check everything under “pressure” except for color.
5. Stroke each path.
6. Apply a gaussian blur (brush size + 2-10)
7. Then restroke the paths with a smaller, white brush.
8. If you want to change the color, go to Colors>Hue / Saturation.