I've had this, though not for about 15 years. Once from a gf, once from a WG. In both cases, it was as they liked to be extra submissive, had them crawl over to me & kiss my feet, prior to a BJ. As I recall, they both got into it and were quite reverential about it, without me having to actually use the word worship. I don't recall getting that much out of it, I have sensitive feet too, and love having them massaged. But the kissing & toe sucking was mostly just ticklish. That said - 'foot worship' seems to now be on the likes list on AW. Perhaps some of those are more skilled at it. I guess as well as being done in a sub way, it can be done in a playfully, and in a maximising pleasure way.
I'd guess most of the lasses that list foot worship will do it on you, especially if they also have sub services liked, though may be worth confirming before hand. For an amateur experience of it, just order any lass that likes being sub to kiss your feet. I'd maybe not ask them to do it on a first visit though, if they don't have it ticked on their likes. Well to be fair I'd not ask anyone to do it these days - my feet aren't bad, but they're no longer totally free of conditions like they were back in the day.