About once a year I tend to go over my thoughts on submission. It can clear things up in my head and it's interesting to compare from year to year how my thoughts change and how many things stay the same. It usually stays relatively static but the importance of each thing will shuffle around. Here goes this year's.
The most important factor in being a good submissive follows the same principles of being a good lover: make her happiness your greatest priority and things will generally turn out well. If your actions and impulses reflect this principle you are in good shape.
This does not mean to become a boring sycophant that just goes along with anything and everything. Be someone worthy of being her life partner.
On a personal level be someone that stimulates her intellectually and emotionally. Be interesting conversation, have a sense of humor, and be able to share things with her that are something unique that only you can offer. Have a personality but do not argue with her.
On an external level be someone she is proud to be with. Be polite, respectful, courteous, and chivalrous . Pay attention and know her body language and visual cues. Be mindful of your surroundings. Be the man that other women will wish they had.
On an emotional level be someone that makes her feel special. Be attentive and a good listener. Be affectionate and open with compliments. Do not let your stubborn masculinity and self-consciousness get in the way of a phrase, act, or gesture that may bring her joy. "I didn't say it because it sounds cheesy," is a weaker man's excuse. She is your Queen. Make her believe she is a Queen.
On a physical level be mindful of your appearance. This does not mean to be vain or shallow. It does mean that there are certain things that she holds a preference for and be mindful of these preferences. If she likes it when you are clean shaven with well kempt hair and nails and dressed in a manner that she finds attractive, this is how you should present yourself to her. Staying in shape and eating right are a plus for the both of you. "I wish you would [insert action here]," should not be in her vocabulary. You should know and have already done that for her.
On a submissive level remain focused on what pleases her. Conduct yourself in the manner she deems most fitting of your position. If she is happy, horny, confident, and proud that you are her submissive, there's a very good chance you will get the kind of activities you also enjoy without having to ask for them.
She is the special one. A submissive exists to make her feel that special all the time.
(After writing this I realized I completely skipped over any sort of romance/romantic gestures. I guess I have failed there).