Number 4 - A central bench should be 'framed' by trees. At the moment image 1 and 2 feature a bench with a tree directly behind it (muddled and confusing) and image 3 has a bench on one side and a tree far on the other with a 'hole' in the middle. Remember 'rules of thirds'.
A hole in the middle of the image not the tree :)
okay got it ! :)
I also think you could zoom in much more! I really like the feeling of the environments :)