Lay your fabric out flat.
Using your ruler and scissors, make a cut along the edge of your fabric every two inches.
At each cut, rip the fabric so you are left with a bunch of raw-edge strips of fabric.
To glue to the lamp shade, fold each fabric strip in half, add a bead of glue down the lamp shade and then attach at the fold.
Using the same method, glue strips of fabric all around the lamp shade.
To finish, cut off any excess fabric hanging around the top or bottom of the lamp shade.