boot function should not be any different once refitted as you are not really adding anything that would alter the mechanics of it.
To remove the badge, take out 2 screws that are on the inside of the boot handles. Take off the 2 plastic light covers, then pull....pull.....and pull, until all the clips are free and the plastic cover is completely off. then remove the 3 screw/washers for the rear wiper, and that will allow you to get to the third screw on the rear of the badge. Then simply remove the 3 screws on the badge, and unplug the wiring. Should be all set then.
For the wrapping ,just make sure you have cleaned the badge. I peel one corner and then with a credit card push it along to make sure that there are no air bubbles, when at the sides put a hairdryer on it for about 15 seconds, and then stretch around the sides, or just cut it flush with the sides as the badge will go over the sides anyway.
Hope that helps.