My first car was a '76 Celica GT liftback. Sorta looked like a small Mustang, 20R four cylinder and a 5spd trans. Of course, being a teenager in the late 80s with no internet, I had no idea how much nicer/cleaner they look with the JDM bumpers and valances instead of the huge U.S. spec safety bumpers. Still a fun car though Not my car, but very close to what it looked like:
If I can run the tape along the edge of the trim without cutting it, I will, but if I can't, I apply the tape, and carefully trim with a fresh blade. I used semi-gloss black, but with the low psi and just barely pulling the trigger black to avoid runs and bleeding under the tape, it came out a lot more flat than semi-gloss.
I used the Ricambi detail set on mine to look like it did at Daytona as a Mecom car with Foyt behind the wheel. For paint, I had some leftover Ford Viking Blue, so I used it along with Tamiya pure white and called it a day.