Couple of mistakes.
1. Wrapped over the old vinyl? Worse idea.. if your old bottom level fails.. your new level fails.
The actual vinyl was in pretty good shape so that's why I decided to cover it. At that time, the graphics were printed by another shop who were totally fleet dedicated so the clearcoat was liquid, not over-laminate one. Only the color was washed away on some spots. The owner asked one of his employees to clean it good so his grabbed one of bottle in the car wash but it was an acid to get rid of grease. It attacked to thinny coat of protection over the ink but the vinyl itself remained solid, free of peeling.
2. You're putting the panels on backwards. Now the wind can easily get under them, and left them since they're going the direction of which you drive....
I don't get your point here. I always performed my installs from the back to the front so this trailer is no exception. All overlaps are protected from the wind (...) I really don't understand what you're trying to tell me.
overall for what it is, nice job.