Here are instructions on removing wallpaper bits and pieces. You will need: a circular electric sander and a microfiber clothe. Simply place the microfiber clothe over the electric sander. Begin to move your way over and across the wall. Much as you would if you were painting; moving up and down and diagonally. Adjust the microfiber clothe as necessary - it may wiggle around as you glide across the wall. You will notice quite a dramatic difference after finishing. Doing this saves a lot of time.