Obtain a pair of jeans, scissors, and a needle.
Using the scissors, make horizontal cuts along the jeans where the distress is desired.
Make a couple more cuts(if desired).
Turn the jeans inside out and locate where the cuts were made.
Using the needle( safety pin), pull out the horizontal strands, one by one if needed.
After several horizontal strands, cut the vertical ones and keep going.
Keep pulling them.
Once you reach your desired point, stop.