Not getting your stage thrown out is not all that difficult. I made a promise that I would never have a stage thrown out over something I did or failed to do when I should have. So far after 40 years I haven't lost one yet.
The trick is to know the rulebook, understand the concept of running a stage, and when in doubt ask someone higher on the pay scale than you. Pay attention to your targets, no-shoots, hard cover, props and walls. Make sure, as much as possible, that the last shooter had the same challenge as the first shooter.
Try to treat others like you would like to be treated. I have let my temper get the best of me on rare occasions and I felt like crap afterwards. Apologies were quick to follow.
Work your crew as a team. Tell them how you work and explain to them what is expected of them in return. We all work to make our stage a success.
Dont be afraid to admit you might be wrong. Evaluate every call. Replay it in your mind, check the rulebook, talk to your crew. They might have had a better view than you did. When all is said and done make your call based on the best available evidence and the rulebook.
Happy New Year!