I don't have any experience with it, however, I understand you can apply it with a brush, roller or spray because it's self-leveling. Traditional auto paint is not self-leveling. I have a lot of experience with rattlecans, spraying small parts, etc, so I know it can run. Yikes!
If you know of a solid method for DIY, please share. I'd love to know that knowledge and be more smarter!