Opinions on my photography?

Hi, i'm 15 and just wondering how my photos are… Just got my first dslr, a nikon d3100. But my older stuff wasn't bad, i think? I don't know.well constructive criticism is appreciated.

Your amazing at this. You should be my photographer.xD

You have a good start. You know what you like to photograph and you see light if the photo of the children is any indication. Otherwise? They are all snapshots that anyone can create with any camera. Take the next step.
Your photos are all shot in automatic-the camera is choosing how you exposure your image and that is taking a lot of creativity and control away from you.
Your compositions are relatively centered and boring. It's time you learn how to do something for yourself. Start with composition
http://photoinf.com/General/KODAK/guidelines_for_better_photographic_composition.html

You also need to learn about aperture, ISO and shutter speed and at the very least how to use the assisted or semi automatic modes. Google.
www.digital-photography-school

They are good, I like the simplicity.
(i favorited the one with the people looking out the window with the dog)

Well, it's what I'd expect from a 15 year old.