Laugh at her when she tries to make a joke. Since the most beautiful thing a man can do for his wife or girlfriend is to laugh at her attempt to crack a joke. Most men forget this attribute when they have been in a long relationship with their significant other. When it comes to this type of relationships the biggest dangers is mostly stopping to show respect for one another. So since laughter is a pretty significant thing in a woman you need to keep it on display every one in a while and remember that communication is the bedrock of every good relationship.
Men need to be fierce when it is needed. It doesn't need to often but mostly needed when in a confrontational situation and all the reasoning and soft words have hard no impact on the subject and completely failed. In this situation you are required to be the lion and defend your family otherwise when you shrink your wife's regards for you will most definitely diminish for you.
When it comes to your wife show the softer side of you and be a lamb. In terms that a good husband or boyfriend will rely on his wife and seek her valuable counsel, trust her to love you even though even though she knows you are not in command at that precise time. If you feel confused and unaware on what to do next in a certain problem you need to keep her in the loop and let her help you find your way.
Try to be touchy with her. At times men don't notice this but they tend to touch their partner pretty infrequent. When I say touchy I really do mean in a nonsexual way, it helps for the closeness and for her feel valued and not just for her looks and body but for something else deeper that that.
Never try to fix her because she is really not broken. People never try to change themselves unless they feel deep down that they are no longer loved the way they are. Once they feel they not required to change anything to fit in in your life then growth starts.