This is a privilege not reachable for every slave.Most slaves love to kneel at their Mistresses feet to be allowed to kiss her boots or shoes, let alone licking them. That will be a real treat fo these lovers.
I often wear high heeld shoes “do I see a sad look appearing in your eyes”? Wipe it off your face. I said often so not always. Sometimes I wear very very beautiful high boots and then there is still a lot of licking to be done. Should you miss a spot, you know I will punish severely.