There are a couple of tricks when it come to changing bar tape. How much to bar tape overlaps as you wrap it is crucial. Too much and there won’t be enough when you get to the end and too little and the tape will separate when it gets warm. The amount of bar tape that you leave at the end of the bar is important so that you have enough to hold the bar plug in. Don’t forget your electric tape when changing bar tape so that you have something to anchor the shifter cables before you wrap the bars and also to anchor the end of the bar tape closest to the stem. Lastly you will need some scissors in order to cut the the end so that the bar tape runs parallel with the stem.