I washed the car first, I measured each cap to make sure I installed them in the correct locations, each cap is custom made for each individual grille, i can't tell the grille color as you like (as shown in the picture), i smoothed the tape while the paper was still sticking, then i cleaned the surface 3 times to avoid dirt, 5 minutes after cleaning the surface waited, removed the tape and put the covers on. 1 at a time I squeezed all the sides before moving on to the next. The car was running before the car was placed so hopefully the heat from the car will help with the tape. I haven't driven the car since, I will tomorrow. So hopefully everything goes smoothly. I'll try to update the review in a week or two.