First, I'd have some type of dialogue about whether or not this is something he is looking for. Hints are good, they can subtly convey direction without the need for proverbial roadmaps, but you should perhaps attempt to find something a bit more concrete before springing this on him. That way, you avoid potential awkwardness, as well as any sort of rejection or feeling like you've somehow failed each other. You are already married and obviously love each other, there's no need to rush.
As for " tips ", it all depends on what he likes. Being " forceful " is good, but can take many forms besides the physical, something I'm sure you are already aware of. Simple verbal teasing, or leading, is one of the most basic and useful things you can utilize. Coaxing things out of someone, whether they are embarrassing answers to questions, requests for specific things they want done to them, or even just whether or not something feels good, can put an entirely new spin on things. This will not only allow him to relinquish control and adopt the role you suspect he has a desire to experience, but also tell you exactly what you want to know and how to act accordingly. You already know what he likes, now you are going to turn that on it's head and give him what you know he needs, while make sure he is vocal in how grateful he is. As for specific types of things you could do in regards to play, that will follow naturally once you get him good and " honest ". I wish you luck.
" God never gives you more than you can handle..."