Since I have only shown you the result from my first tries to shred jeans I made a little video. It is very easy and the only tool you need is the one I use in the video. For my first pair of jeans I followed the instruction of another YouTube-Video. Soon I developed my own. Try it and you will get a very nice result. Pictures coming up from this pair.
By the way, the song is We Can’t Fly by Aerplane – lovely, isn’t it?