Not exactly sure what you mean. Do you mean how I made it glow, or what? If that’s what you’re asking, a glow effect is pretty easy. You take the pattern that you use for shading, make the line and prime color transparent, and second color the glow color. Then you make it just a little bigger than the thing you’re trying to make glow. BTW, when you do that, use the pattern that’s darker in the middle. This allows the outside to be transparent.
If that’s not what you meant, sorry. Thanks, though!