What do mean by applied correctly?
What I mean is in accordance with data sheets but ALSO the many VARIABLES in this field. Unless you're doing your work in a controlled booth for things like temperature, lighting, air filtering, etc then you need to compensate when just shooting in a garage.
Temps vary a lot this time of year. We have 70 during the day and 30 degrees at night. If you shoot bc/cc you can't get below 55 through the cure process a good 8 - 10 hours after paint.
Also, the materials used, flash times, how thick you sprayed, the gun (adjusted for the products), the coverage, the type masking tape, dirt in the shop, primer, filler, sanding quality and on and on. There are SO many variables. Experience is the best teacher. If you've even sprayed one vehicle you can probably tell us a couple things you would have done differently.
Henry