Mate, I'm trying to stop people talking about you- I even renamed that thread I made because I felt bad about it. But the more you post in this thread, and the more I post explaining it, then the more people will read the thread. If people post it's just going to stay at the top of the list- vicious circle.
Secondly, I really don't think people will believe you didn't create that account. I saw both profiles myself, and unless you have an identically named twin you don't know about it but who uses your xbox live account while you're out of the house I think you've been caught in the act. Put your hands up and admit it, there's no shame in it in the grand scheme of things.
Lastly, putting aside your grammar mistakes, I honestly don't think you're ready to write reviews like that yet. Like someone else said, you need to start a bit smaller and work you're way up to it. Get some opinions on things- if you're 12, and I don't mean this cruelly, I don't think you've had enough life experience to give your reviews enough zing. There's nothing wrong with being 12, but if you're going to try and do things you're not ready for then chances are people will criticise you. So pace yourself.
Maybe it's time a mod put this thread down?
Peace out