I ahve never done this And I am not sure that I could but I saw a guy at a car dealership do the plastic pinstriplike this.
stuck about 4 inches how he wanted.
Than he pulled away and out the remainder of the car or panel without sticking it. lined it up and stuck it down.
I have ben trying to mask round corners in my house for straight lines and have been having a tough time.
My wife watches trading spaces

OUCH