Why do some feel ur being negative when u feel ur trying to help?

My husband is taking his driving test 2moro & I've already been driving for over 10 years. I know some aspects of the tests have changed since I took it but if I suggest an idea my husband things I am being negative to him!

It's like if I say 'the examiner might expect u to over do looking at ur mirrors before u move the car' my husband wud say, stop telling me what to do, stop being negative!

Or if they ask 'how do u check if ur indicators are working' my husband wud say 'put on hazard lights' I said yes that'll work but u can put on each light individually & check that way too, my hubby said I was being negative & disrespectful of his way of learning!

Am I in the wrong?