I totally get that. I too still hold the door and car door etc. In the experience I have with my wife of 10 years is that she just wants me to be a bit more forceful, rough, dominating. The things we do for our wives... I would suggest starting softly. I en as a pat casually, not in bed, to get yourself used to it but also let her know you are being sensitive to her desires. Work your way toward what you both feel is comfortable. My wife loves my big hands and it's a turn on for her to use them. Just keep open communication about it.