The big flat panels are actually harder to do solo than the complex panels like the bonnet and the wings. If I wanted to do this on a newer van and wanted a fully professional finish I would have two people on the job. It’s not really possible to get a perfect finish in a reasonable amount of time with only one person.
I just have the passenger door and triangular bit above both the passenger door and the drivers door still to do. After that its just little bits that will be easy to do and can use the small leftovers.
I am not perfectly happy with the end result. BUT. I have happy overall that the van now looks a thousand times better at very little cost and with about 2-3 days work.