Let’s look at the completed results first:
Here's how it works in Photoshop.
First create two new layers in the file:
Note: The second layer below is black and the layer above is transparent
If you want 2400*1800, select the brush tool and color it white.
Select the brush tool.
Select the brush foreground color to white.
draw a stroke
Set the layer style, mainly glow
motion blur again
Duplicate two and merge the layers, then Ctrl+T to adjust the shape, and finally duplicate a few more
Finally, copy a few more, pay attention to the perspective relationship, and complete.