[Jerom]

ok, at the bottom of the mountain, you used dark dirt mountain bottom tiles which you can see being mixed into the grass.
You used a bunc of mixed up mountain side tiles while making the mountain. It's best to stick with one while making the sides.
When making swamp grass, it's best to make full 2v2 squares, and use the corners to make it not look blocky.
As for the trail, it looks pretty good. Although if you notice in the file attatched, that there are two types of tiles that you can use for grass-to-dirt tiles in this condition. One is for the left side closing, and the other is for the right side closing. I hope that made sense.