Well first you need to upload a video. Which you haven't done yet.
Also it's very hard to become popular on YouTube doing COD videos because there are so many other people doing the exact same thing. You will only get popular if you do something that has never been done before or something that is very interesting. And even if you do something original and interesting you might not get noticed anyway. I suggest uploading some good videos and have your friends watch them, and get their opinion. Then expand and ask people on the forum or people on your friends list. Then take it from there.