Hi Robbin,
I, too, am exploring how to heighten the feelings in my nipples by trying different techniques. Wuerstchen is the nipple orgasm guru here, and has helped me develop more nipple sensitivity (advice only; my wife does the hands-on part
). My ultimate goal is to experience the nipple orgasms that he so easily accomplishes. Unfortunately, for me, I can tell it's going to take some time to get there. 
I wish you well on your progress.
Clara
(trying to imagine what a nipple orgasm feels like)
I, too, am exploring how to heighten the feelings in my nipples by trying different techniques. Wuerstchen is the nipple orgasm guru here, and has helped me develop more nipple sensitivity (advice only; my wife does the hands-on part
). My ultimate goal is to experience the nipple orgasms that he so easily accomplishes. Unfortunately, for me, I can tell it's going to take some time to get there. I wish you well on your progress.
Clara
(trying to imagine what a nipple orgasm feels like)