Hmm, well the second set are much better than the first.
I'm guessing that your character is in a forested area, away from any road ways or anything, but maybe you could try to dense it up a bit? Just by adding more doodads, trees, and the like you could maybe make it seem like more of a forest, but then add some small little dirt paths, or paths out of some other material. Make sure with trees, that you change the sizes, rotate them, and stuff like that so you don't have the same sized tree, pointing the same direction, in multiple spots or it will look really bad.
Now do not randomly spam stuff, that will just ruin any effect you could have had. Another thing would be height variation. It still just seems a bit flat, and would get both repetitive and boring to look at after a while. I'm not trying to be a complete critique since its a playable terrain, but adding more could add more of an atmospheric effect which is kind of hard to find in some playable maps.