What are the biggest mistakes with best workflow in Prompt Injection?

The point about best and workflow is interesting. In practice I would keep the first test simple, record what worked, and only add extra complexity if it solves a specific limitation. The original point — "I have a question about Prompt Injection that may be useful for other people working with it too. I am particularly interested in best workflow and testing. I would like to compar…" — gives a useful starting point for that comparison.