How to Create Glowing Lines in photoshop
Here we will create some thin flowing lines that look as if they emit light. This technique is fairly simple and is a great way to create an abstract wallpaper or looks good integrated into another image. This tutorial will mainly explore the brush engine and you will also learn how to create custom brushes and use them effectively, combined with some interesting layer styles.
Start by creating a new document, here I used 1024×768px and 72dpi. Using the paint bucket tool (G) fill the background layer with black, alternatively you could use a dark gradient instead. Click the brush tool (B) then change the settings of this brush to a 1px round, white brush with 0% hardness. Create a new layer then select the pen tool (P) and in the main toolbar make sure paths is selected, now start slightly outwith the canvas on the left then using about four points draw a curve with a similar shape to the one below. Right click anywhere inside the document then select stroke path, make sure simulate pressure is checked then hit OK. Lastly hit the Esc key twice to get rid of the path.