Great job on this one, I can't really see anything that needs to be changed, overall well done, the knot hole is the only thing I can think of in my opinion, brown would be better than tan. Anyways, keep up the good work!
What is Good?
I really like the barrier design and the landscaping is very good. The tree design is very realistic and i like the way the layers of leaves build up
What could be improved?
I feel that the tan technic 1X1 brick in the tree looks a bit out of place, maybe replace that with either a Brown or Dark Brown 1X1 piece.
Suggestions For Even More Improvement:
I think that the only thing missing from the creation is a base which would add detail to the creation. I used technic grey brick for a base in this creation: http://www.mocpages.com/moc.php/312268 or another good base technique you could use is the ones in Deff's creations like the 1X1 bricks with the stud on the side.
Seen and Given Constructive Critism in the Group: " Constructive Criticism".
Nice! Again, it's a small dio like a snapshot or a polaroid photo. Maybe a post card: "Happy Mothers Day form the edge of the Republic!" The focus and lighting are good. I agree with Patrick: the tan knothole would be better in brown, and I agree with you: The bent paper background is a bit of an eye catcher, but cool, you already know this. Oh, and I like the simple barrier you built for these guys. Easy, not over done. Attack!