Tools that you will need are a good pair of fabric scissors, a seam ripper or knife, a utensil for marking, and tweezers.
Grab a few pair of your favorite jeans and just take a moment to decide what you want to do with them. Remember, once you cut something you cannot add it back on, there are tons of ways and styles of distressing so know your options.
Lay a pair of jeans on a flat surface and use a marker to mark where you want to cut them. It's always safe to start off kind of long because you can always go back and take off more.
Once you have the jeans cut to your liking, use a seam ripper or something sharp to cut slits in your jeans. It doesn't have to be perfect, but remember however wide/long you do the slits will be the size of your rip. Next, use your tweezers to pull out the small white threads in your denim.
Finally, wash and dry your new shorts or distressed jeans and voila! You have a new pair of shorts for the summer.