Unfortunately, there are no foolproof ways to apply paint. I once used a brand of primer. The same brand's paint and then the same brand's clear. All was well until I applied the clear, and then it looked like the first picture that started this thread. The worst part about it was that it was a race car and the clear was to seal in the decals. I was able to sand the alligator skin down and re-apply the paint, but it was 3 stressful days.