I'm not a mapper, but here's something I did in about 15mins.
Can I get some feedback/rating?
The tree's/grass looks too piled and close together. It doesn't look natural.
If I were you, i'd spread out the tree's and grass even more to make it look more vibrant.
for example, don't put a tree so close together, but don't let it go that far apart aswell.
Here's an example of a map I just threw together. As you can see, I spreaded the tree's out, but not by much.
I also like to mix and match the grasses together just for the hell of it, since I think it looks pretty