I just installed these today. I know these are kind of the beginner pieces but it was a little tricky. I think the rear pars are harder because it's not really clear where they get positioned. The fore and aft positioning is arbitrary and if you are not careful, you'll get it too far along where the metal creases and have trouble sticking the film down. It's also unclear which what is up. I also got a bit mixed up and installed them wrong side out. Peeling them off the long sheet and spraying both sides and not knowing which side was up, I goofed. Didn't really realize it until I felt the tacky side out after drying. Luckily, I was able to peel it off and get it on right.

The front parts are easier since you can line up with the black plastic piece in the door sill.

I still have a few tiny bubbles that I'm hoping will go away. Even if they don't, they are not really noticeable unless you are looking for them. Overall, I'm pleased with the kit.