4. Be the head.
Do not abdicate your authority. If she comes to you asking for your opinion or leadership, give it. Do not say, "I don't care" or "You decide". You are held responsible for the relationship and will have to give an account to God for how you led in the marriage. Take this very seriously. Your wife should be very comfortable coming to you for guidance and assuming you will make the decisions that need to be made. She should trust that you have gone to God, before the elders, before the church even to make your decision(s) if it warrants such a progression. You should also not neglect to include your wife's thoughts and opinions in your decision. You do have the final say though and if you are doing the other things well, your wife should have no problem submitting to your authority in this. Remember: if you cannot do it in faith, you do it in sin.
Links to the other three posts on this topic: 1, 2, & 3.