How do I be more masculine in my relationship?

Ok..so here is what is going on: My fiance and I are getting married in September and we have hit a point where I don't think I am man and masculine enough. I grew up around women my whole life and so the problem doesn't lie in knowing how to take care of her....im great with doing that. However, i know for a fact that I am not masuline enough and want her to feel like she can be confident and protected when she is with me. I subtly made a joke today that I could stand to be more masculine and in her own subtle way she agreed. I have a couple things that I know I can change but other than that, im not sure what I can do. I am a pushover..i know that, I sugarcoat things too much...i know that, i let her get her way too much...i definitely know that, i have a big sensitive side and don't see anything wrong with that but maybe it's too much. Any advice at all would really help. Thanks to all who answer!