What side of a hat ribbing does the turning row need to be on for the ribbing to turn up

I am knitting a hat for a little girl who walks to school with her dad, I asked him if she had mittens to wear if it gets cold, he said no she didn’t . I told him I would make her a pair and I decided to knit a hat to go with the mittens. Now I need to know what side of the ribbing a turning ridge row needs to be on for the ribbing to be turned up for a cuff on the hat/ Any help will be greatly appreciated

I’ve only used turning rows on hemmed hats knit in the round, but I do them on the outside. It creates a ridge that makes the brim flip up naturally.

Thanks Jan I will do that then.