The issue you have is what you say is "how to be proper dominate". There isn't just one way.
One could say if she is doing just what she wants that she is being dominant. Giving no or little thought to what you want is being dominant. You however insisting that action go your way is not really being submissive to her dominance.
So it boils down to you both obtaining some sort of common ground. I agree with tge others that if you are to find that common ground then you have to communicate to find it. It is better to do this without the fog of sexual arousal. Plan a meeting to talk it over in a relaxed atmosphere. There will be tension of course. Both of you ought to plan for it. It will be most difficult for you. You must lay the seeds for the actions you imagine. Whatever is decided you must leave the decision you her. If you want her to actually dominate the bedroom then you have to agree with her that she has the final say. If don't, it is not her who is improperly dominating, it is you who is improperly submitting.