It needs to be fixed

Im working on a couple of designs on verious vehicles and for what ever reason it is doing it, it is beyond my comprehension? I’m creating a Anzac vinyl for a 1951 holden 50-2106 FX ute and another is the 2015 Ferrari 488 GTB. I have no issue the left, top, front and rear, but the right side always appears as if the vinyl was put on backwards. Can i please get help as it’s really starting get really annoying