Tony, that grass texture looks great. I scaled it to 100ppi and tiled it across the map and its super - though I don't think it looks like game-map grass. The colour of it works for you? I also fixed up your map to centre the path.

Where did you get your grass texture? Can you post me a link so I can check it can be used for commercial work before I post up your map - I don't want to provide you with a map that might get you sued down the road.