Put on the jeans and mark where you want the rips
Lay the jeans flat on a hard surface
Insert a piece of cardboard inside the leg
Use chalk or a fabric marker to outline the rip area
Make small horizontal cuts with scissors or a razor
Use tweezers to pull out a few vertical threads
Rub the area with sandpaper or a pumice stone for a worn look
Repeat on other areas if desired
Wash the jeans to soften and fray the edges
Trim any loose threads if needed