Compare this map to the others already built; your map is lacking in so much depth and detail. I'm sorry, but I don't see this being accepted.
If you'd like to work on it some more, my first tip would be to never bonemeal a tree on any map. It's just lazy. Try not to have too many flat surfaces, and really get into the theme of your build. If you're building a Campsite, there should be a fire, some tents, a little pond, just little details that would really bring alive your creations.