My friend is a head of a team, so it was really an argument between me and his group, where my thinking was different from that of him and his group. The project that I was trying to push didn't get any support and I'm describing what I would have done differently now that I have more experience.
My question was whether I picked the right example, as there are far more projects where I succeeded. I thought this one was interesting to analyze and would show the fact that I can be friends with someone and disagree with them.
It's paranoia. The app is submitted, so there is no going back now. I can relax for a while