What do I have to do to get play on a good aau team?

I'm a freshman combo guard that lives overseas at the moment. I'm moving back to Texas during the summer. I"m 5ft. 11in.. I want to try out for one of the really good teams, like the Houston Hoops or Houston Defenders. Overseas, I'm probably one of the best players in the country for my age. When i go back to the states, i don't know how different its gunna be, considering the aggression level people play at.