Once you're certain that you have the time and energy to run a game, take a bit to decide what kind of game you want to run.  The best advice I can offer you is to run something that you're excited about, you lead your cast of players, and you will fuel their enthusiasm, so pick something that excites you!  If you're a little nervous that nobody will like your idea, you can test it in the Forum's Staging Area, however, I'm a firm believer in - Build It and They WILL Come.  Enthusiasm, from my experience, is contagious.  When you're ready send a PM or email to China, and include the following information.

1. What's the name of your game?
2. A blurb for your game, a short synopsis of some sort that gives me some insight about it. (example: Hudson City - Where Heroes Lose Their Innocense)
3. What system will you be using to run it, or if it will be free form.
4. What tools do you need that we don't have on the site to help you run it better?
5. A sample of your casting call, if you have one prepared.
6. Will this be a full fledged campaign, or a short one-off story.
7. If this will be associated with another campaign, like in the same universe, let me know so that I can start brainstorming about ways to make it easy for all GMs involved to keep track of the campaigns in your shared world.
8. Lastly, let us know what we can do to help you get your game off the ground.