Friend and I just did it this past weekend. Not bad considering it was the first time ever trying it for both of us. Some creases but I don't mind.
Terrible pics since I downloaded them from snapchat
The size of the roof is something like 4x6ft (excluding the spoiler) so I got a 5x7ft 3M gloss black from Amazon and the knifeless cutting system (string inside tape... highly recommended).
First laid it on with the backing just to cut some excess off
Worked with the back half first then the front
Clean edge on the spoiler done with this
http://www.amazon.com/Knifeless-Fin...qid=1456246222&sr=8-1&keywords=knifeless+tape
Tips:
-Use heat only when needed. I was able to get the majority done without the heat gun but once it got close to the edge I needed it for stretching and shrinking to eliminate the wrinkles.
-Pull on each side. Friend was too short so I had trouble in the middle. But once friend #3 showed up it was much easier since they pulled evenly on each side (left and right) while I focused on laying it down right.
-Don't worry too much about air bubbles. I was surprised at how I was able to get every air bubble out by just pushing down on it. At first I tried squeegeeing them out but it's not necessary.
-I used a MF cloth and card to squeegee but I should have sprayed it to eliminate or minimize scratches.
-Patience. With it being the first time I thought it would take 2 hrs the most. Took about 6 hours but alomst 1.5 hrs was spent trying to figure out how to remove the antenna. Once I understood how the wires unclipped I felt stupid that I hadn't thought of it sooner.