
Write with Light
I have always wanted to create one of those pictures that looks like someone wrote with light on the background. I know it`s old as time and there are a million Photoshop brushes that will do it for you, but I really wanted to try it with my camera.
How I did it

These final ones had to be composed together by using several different shots and using blending modes on Linear Dodge in Photoshop CS6. The Bokeh effect was a brush combination (link here and here), using Gaussian blur at 3 different blur sizes, 30px, 15-19px and 4px, each deviation on its on layer. Make sure you set your foreground color swatch to white and the background swatch in a purple like the one shown on your light writing picture. Then using blending mode Color Dodge, it gave it a more monochromatic tone.