For that somewhat visible line on the car at the edge of the Clear Bra, be sure to wash your car properly when there is one on. Basically, you want to wipe (whatever you use to wipe) from Clear Bra off onto bare paint. Going the other way will catch wax/soap against the edge and eventually start working underneath, making that line very visible.
Larry Kosilla of AMMO NYC has some really excellent vids on the topic:
clear-bra-invisible-paint-protection
How to Clean Your Clear Bra