Having recently updated the front engine hood cover with a 72" x 60" sheet, I can't imagine how much effort and how challenging it must have been. I was amazed before, but I'm even more amazed now. Great job.
Thanks but it's not that bad. Zero "pre" cuts were made for the hood so it was just a rectangular sheet - I did any cutting / trimming after the entire sheet was temporarily stuck. (I learned the hard way also not to trim until the last possible minute.) I cut the sheet to some extra length then rerolled it to make it easier to handle later with one hand. I peeled the backing off and stuck the PPF a little bit at a time starting from one side of the car.
To help hold the peeled PPF down while incrementally removing more backing I used stick solution temporarily on the peeled PPF and car knowing I would adjust again in a few minutes - it acted like another pair of hands. (I used this method for all large sheets where an extra pair of hands would have been nice - remove some backing from the roll, stick the peeled PPF with stick solution, unroll and unpeel more backing, then repeat the process again and again.)
It's important to mention this temporary sticking method requires all surfaces to be clean, lint-free, etc - that means not only the entire car surface to about to be PPF'd but both sides of the PPF and backing because the backing will be touching the car surface as it's incrementally unpeeled/unrolled. So I cleaned the PPF and backing with isopropyl alcohol and a microfiber cloth right after I cut it off the larger roll.
Once all backing was removed and the sheet was installed onto the car, I lifted up the PPF and squirted slip solution to prevent permanent sticking so I could adjust the whole sheet appropriately. I wasn't in a rush and took my sweet, sweet time as i was content on not using the XC90 for 3-4 weeks (didn't want to dirty and reclean all over again) until all the PPF was done.