Probably the first step would be to ask him what he likes/enjoys/dislikes and even fantasize about. (Mmmm....Imagine the sexy convo around that!)

When Topping I found the easiest was to mimic what I enjoyed having done to me (those things corresponding to his 'likes')
When I had more self-confidence, other things grew from there.

Topping isn't something that comes naturally to me, but sometimes one learns because it is the right thing for you to do. And imagine how Turnabout would be (funfilled) fairplay when switching

I found the most difficult part being strict ...I always wanted to ask if I may......<Insert action>but in the end I couldn't help seeing his enjoyment and react in kind.

Hope all goes well, Harper.