For the most part, I've had bad luck with women, since they are usually disgusted by me when I lick their feet for my own pleasures. And by this I mean either secretly or openly disgusted. One is a little harder to detect than the other BTW, but I'm professionally trained in detecting both.
So eventually I did find a way to make women truly enjoy my undeniable pleasures in foot worship (without the secret or open disgust). What you have to do is get your tongue in the sweet spot which is slightly above the heel on the sole of her foot and right below the middle of her sole. It gets a genuine smile out of the woman almost every time.
I've tested this out to a high probability of success with girls like
Lia LaBowe and
Syn Paige.