First: lay out the jeans you would like to cut the holes in, i used a pant leg from shorts i made just to show you guys how to do it.
Make a slit with your scissors. The bigger the slit, the wider the hole will be.
Open the top part of the slit and look closely until you see the white strings that go across & begin to pull them over with tweezers.
After you've done the top and bottom strings, it'll end up looking like this.
Pull out the white strings, be careful not to rip them!
Eventually the top strings that are sticking out on the top will make it hard for you to pull out the strings.
Just cut them off but be careful, dont cut the white string that we need to pull out or there will be a gap.
Finished. (Sizes may vary)