Well, I gotta say, it looks really flat. Looks as if someone painted it on a wall. As the path goes backward, it should get skinnier, and less detailed. The grass in the front should be shorter too, so that you can see it lining the path as it goes back(if thats the intention). Making scenery on a transparent background looks kinda odd(unless you are drawing a rock or a tree or something). And lastly, it should extend back more.

 

Just don't give up. Please.