if you mean the rear one, i fitted one about 3 months ago. take off the rear reflector panel and seat
badge, wash and clean the area then dry it off and then get a bit of string and tie it to the boot lock and put the other end on the boot lid so that it holds the lid at a reasonable height so its easier to work on. offer the vinyl up and make sure it fits. what i did then was to peel all the backing off and lay it into position, then start from one end and rub it with a clean cloth to make it stick properly and to get all the air bubbles out. i got 2 air bubbles that i couldnt get rid of so i got a pin and popped them and they are barely visible now. as i say its the way i did it and it seemed to work for me ok. just take your time and be patient.