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I have friends who also cut their own hair and it always amazes me to see how skilled they are like your wife. I would defo not be able to do so with my own hair and probably end up with some wrong cuts here and there (or everywhere haha)

It's easy...Just do it like this!

haha that's exactly what I tell my partner, every single time that he asks me to cut his hair. For my hair, I pass :)