Overall your site looks nice, but you need to change the color of the word professional in the welcome section, I almost can't see it. And I think it's better to put image on your header rather than just the title of your site.
Very nice colors and template. Over all the feel of the blog is nice, but you should really not post that your 16. Some may look down on you because of your age. That is solely up to you though.
Nice blog and pleasant colored layout. I like it. I think the banner looks too large, try to compress it..