I'm just about done applying my Vinyl trim. The main thing I've learned is that it's not near as easy as it looks on YouTube. The other thing I learned is that there is "wrap", which is just vinyl with a backing sheet, and there are "decals", which also have a paper application layer on top to hold everything in alignment. Most of what I've used has been with the paper application layer on top. My results are pretty crappy by professional standards, but I'm sure it will look good from 10,000', inverted. Here's a brief explanation of how the wingtip process went:
First, lay the decal in place and align it how you want. The long blue tape is a "hinge", and the short blue tape is a registration mark.
After alignment, fold the decal back and remove the backing. Spray both the wingtip and decal with Rapid-Tac.
This is knifeless tape which I had intended to use to make a nice edge. It didn't work at all. I used a knife.
Fold the decal back into place and spray the top of the application paper with Rapid-Tac. This lubricates the squeege and also facilitates the removal of the paper application sheet several minutes later.
After squeegeing and the Rapid-Tac has had time to work, pull off the application layer at a 45 deg angle.
This vinyl doesn't like compound curves at all
I used a hair dryer to heat it up, squeeged and stretched it as best I could, with not much luck
The final result has some wrinkles on the outside edge that I could never get out. It is what it is.