I dedicate this post to my loser of a brother who didn't write back after so many months... I mailed him a letter to celebrate Conventionalism, see.
I may not be very good at photography but that doesn't mean I can't insult others, particularly him, because I'm so full of myself; just like him :)
My god, we ARE siblings!
You should be able to take some decent photos after this.
Rule of Thirds - Your subject doesn't have to be in the middle of every photo. It may look best when it's 1/3 to the left/right of your photo.
Eye movement - Create movement by directing the viewer's eyes to your subject.
Perspective - Gives your photo some depth so it doesn't look flat.
Photoshop - Use it. Love it :)
Ps. I might have categorized the pics wrongly, I don't know (read: second paragraph).