I need smoe help with writing

Well I am 15, I dont run a buisness, but I do write articles and am membre of lots of forums

I run
http://googolians.blogspot.com/index.html
http://forum-blog.blogspot.com/
http://googolians.net/forum/

And am member of too many forums lol, BUT my problem is that I can write articles fine, but I write them with what I have in mind, I cant seem to dig deeper and get more text out of it. Like This Article from Google about Google Desktop and My Article about it. If you read them, can you see what I mean, I have more to say but I cant really seem to find a way to put it into context. I know someone here ca help me please