Don’t criticize her for not being able to do small tasks. Women generally multitask, they work, they cook, they take care of kids etc. So small things should actually not matter at all. If you feel that those small things are very important to you, go ahead and do it by yourself. She will be more than happy to know that you could help her in some way at least.
When you want to discuss something very serious then know their mood. Try to tell them when they are in a very understanding mood. Try to tell that something happened to someone. See the reaction and then tell that, that person is nobody else, but you only. Don’t jump and give all the details. This will surely end your relation.
Don’t use dirty language in front of her. Girls generally are very dignified when they speak. So understand their mentality and change your usage of words accordingly.
Try to dress up neatly all the time. Usage of good deodorants and scents are always recommended. Try to be as smart as possible. Women should think they have the best husband ever. Try to maintain your body. This is very important for a very successful relationship.
Respect and care her a lot. This is more precious for them than a diamond ring. Care is what they expect from you and not your money. So love and care her as much as possible. Never lie to her. To hide this lie you will end up telling thousand lies which may lead you into a soup. So try not to lie with your loved one.
Being sincere is very important. Don’t flirt with anybody when you are already in a relationship. Be very compassionate and understanding to your spouse. After all they themselves are your life.
Be a good listener and don’t forget to praise her for all her good qualities in public. She will be elated to hear all these things. Compliment her every now and then. You should give her space to think and act. This gives her a lot of independence in life. Don’t forget to tell her how important she is in your life, every now and then.