Good question! A good place to start is in assessing the relationship and the things you both already enjoy. If he likes certain things that you do, incorporate them into your bondage scene, but don't bring them to fruition until you are ready to do so. Magnify these things, and build on them. Here's an example: Say he loves it when you bite on his neck. After getting him nice and secure, nibble all over his body, varying the degrees of those nibbles. By the time you get to his neck, you'll have driven him nuts. You can take this example scenario as far as your communication and comfort level with each other will allow. If you know he likes pain and have experimented with it in a non-bondage situation, try a knife tip (carefully, of course) a Whartenberg wheel, some spanking and more. Gauge your actions on his responses. If he seems to shrink back from something, ease off. If he is straining against the ropes trying to get more of what you're doing, tease him a bit with it. Use your imagination and look around you for things that will create different sensations and use them in ways that they were not intended. Your home is a buffet of toys, the best of which is your imagination.