Tips and tricks?

So my s.o and I have been steady for awhile now. And I've pretty much known from the beginning that he has a foot fettish(my feet turn him on and he likes to be touched by them). But he tends to ask me "have you learned anything to do with them?" Or something like that. So I was wondering if anyone has a bf like this and if someone knows what I can do to "use my feet more".