What I have done when attaching tapes/glue combo. Is i put the tape on my lace base. I keep the backings on like Paul.. but i bend the backing a little so its easier to pull off.. For the very back of the unit, I take all the tape backing off. Than i put it on my head holding it by the back so it doesn't stick. and i position the unit the way i want. I will put the hairline SLIGHTLy back further than normal because some of my system can stretch. I tack down the very back of the unit, and secure it. once its down i flip the unit up in front of a mirror so i get a full view of the tapes etc.. and section by section i peel away the tape backing and tack it back down. Going back to front. And when i am done with the tape, the hairline will be in its final position. Than I mark the hairline with a make up pencil or whatever, flip the front back and than put the glue on my scalp for the hairline etc.. Than when its dry i attach the front hairline.