I did have another friend on FB once post something about the "pinch rule" which I had never heard about before. She was passionate that everyone make sure they follow the pinch rule and posted a link so I read it and asked her more about it and she helped me make my children safer in the car. So I think posting something generic can help if you would like to do that.
What's the pinch rule?

I see photo's all the time on Facebook of kids in car seat with horribly twisted straps or straps not on shoulders :/ I'm such a perfectionist the straps have to be perfect so much so I will redo it after DH sometimes.

You could say something like...wow I must be a bit over the top when I put my kids in their car seat cos seeing the car straps twisted really annoys me I have to fix them up...or something along those lines.