I followed exactly what randall wrote in the step by step manual.
Guess what, it was successful! I was really happy with the results!
Below are my process. Starts with the original image.
Start slow, blue glitch is visible on the bottom.
Tried more daring copy and paste action.
And more daring moving up and down copy and paste action!
Yes, opening on preview and on photoshop makes a different! But I actually love this!
I keep going and this final image did not look like the original, so I think I should stop right? Or should I keep on glitching?