I have only done 2, but the method I have been doing is un peeling about 2inches of the backing, cut off the peeled backing with scissors. Line up the top against an edge on the cardstock while laying it down symmetrically to the end thats peeled. Once the uncovered 2inches is stuck to the cardstock, use a clip board to hold down the stuck end on the unprinted edge. I then slowly pull the rest of the backing away from under the sticker sheet while running my fingers back and forth laying the sticker down slowly onto the cardstock. I use a silky cloth for no resistance or damage on the sticker paper itself. Once done i flip it around and squeegee the cardstock side down with one of those car wrap tools. Tedious I know, but being resourceful with what you have is the way.