Style is nice as usual, but layout isn't that good: right part is ok, but on the left there are just two dead ends...
here is my layout idea:
gray parts - concrete or some other artificial ground...
![](http://img4.imageshack.us/img4/9260/oldf.th.png)
[Edit]
After playtest it turned out that all wooden things at the top-left don't collide at all... so there is no dead end at the left... but i don't like such structure anyway...