How to create "glitch" letters broken down:

I took photos after each step to help:

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Start with base color and lettering

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Shift to first color(red) to the right of the base (black)

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Shift secondary color (blue) to the left of the base (black)

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Start with the left color and add lines towards the left (blue)

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Next add the right color(red) and add lines towards the right

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Add the base color lines randomly in both directions horizontally

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Take an opaque white pen and add white horizontal lines
I think there is a lot to explore with different colors and different brush pens. It was a little tedious but I can imagine so many things to use it for other than glitch writing.