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.
