Overall, not bad. The one thing that I constantly notice in your writings is that you still sound like a young writer (which you are) and there is nothing wrong with that. There are a lot of aspects that you will learn in high school and in college that will teach you to sound like a more professional, established writer. I think you definitely have the potential and you will get a ton of constructive criticism but the most important thing is to not take offense and use it to grow. Like I said before, you definitely possess the potential. But like a coach once told me, potential is only a word until you do something with it. Best of luck in your writing endeavors.
This.
I too get the feeling from your writings that you are a younger writer, and your articles still have that "message board post" feel to them. Your writing style will definitely evolve over time as your vocabulary and ability to construct flowing sentences and paragraphs increases, so this isn't necessarily something to worry about or consciously work on.
One thing I notice, too, is that you tend to give your thesis, make your argument, then pose a question to the reader to sum it all up ("sounds good, right?" or more general: "am I right?"). Now, this isn't necessarily a bad tool to use (I use it on occasion), but it seems as though you rely too heavily on the reader's answer to the question as validation of your points, rather than making your arguments that culminate in a matter-of-fact conclusion.
Again, this is something that you will learn about over time, but for me you do it a little too much, and it goes a long way in highlighting the "message board" style you have.