You dont have to really get the cut out.
You can get a whole roll for cheaper off e-bay.
I got more than enough to do all the rear lights for under $15CDN shipped to CANADA. Must be cheaper if your staying in the states.
The graphic guy who install this for me said it was the perfect material for the job too.
PM me if you want the ebay link.. I will try and dig up my ebay history for it!