I'm not sure if I really need to say more than that. If you want to be a great dancer, you know, the kind that you admire, like Aziza or Sadie, or Kaya, Ava Fleming, or whoever it is,,, then you have to practice a lot!
Take belly dance classes
Take belly dance workshops
Practice in front of a mirror
Video tape yourself, play it back, and look at yourself with a critical eye
Schedule time at least 5 days a week to practice
Make belly dance your obsession
And you will reap the rewards!