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".