One of the things he mentions in the video is a lack of clear coat. This was one of my older paint jobs and I have been clear coating things for a little bit now. All aside, it was a mistake that I used to make in the past, but has been remedied because I realized without the clear coat I wasn't giving people nearly the reliable quality that I had originally wanted to.
I was very happy to see this video, as it is basically feedback to me as well. He likes the paint job, but I need to work on a few things to improve upon it. It's things like this video that help me improve to give people the best I can.