That is correct, Dave did shoot my convertible. I could have and would have done it myself but he made the offer and I accepted it as he is a much more seasoned painter than I am plus it helps to have someone more experienced with you when you are trying to attain a certain level.
The reason I have cars sprayed at my buddies collision shop now is not due to lack of skill on my part, it is due to cost effectiveness and conditions at my shop. I have a spray room, but not a booth. For the level of work I'm doing now, it makes sense and the arrangement I have with him works. Also keep in mind, Dave and I have known each other for quite a while and we talked quite a bit off these forums so I had some coaching on what to do and what not to do in addition to what I learned when I took classes on auto collision repair and paint in the mid 2000s. The other thing is, I can't get the materials for what a production shop can get them for. In the end, it's a cheaper and better quality job (because of spray room conditions) than I can yield out of my own shop.
What I will also say is, when I was doing side work out of my home garage, I refused several jobs from people who wanted their car painted over their bodywork. There is just no way to know what is under it unless you strip it. Who knows is whoever just slung mud over rust or old lacquer paint. Was the metal prepped right for bodywork. There are just too many variables to trust something like that.
Those 2 body/paint jobs I did here at home, I took the car to a friends farm almost 2 hours away and painted them there in his spray room. I would be willing to bet anyone body guy that is good would want to start from scratch. Remember, it's their name on it. Painting over inexperienced work is a good way to turn a good reputation bad.