Hills with pointy rocks

Hello, I’m Kaos86 and I just started to learn blender, and so far I love this program.
I did do some tutorials on blender.org and I did this little scene. Please let me know what I need to work on.
Updated

http://img170.imageshack.us/my.php?image=hillswithpointyrockscq7.jpg

Not bad. Your materials are pretty good, though your grass may need some work.

What’s wrong with the grass? Is the texture is bad?

the rocks seem too shiny - turn the spec down and it should look better.

If you’re using static particles for the grass, you should try to make it a lot denser, This way we can’t see the green mesh under it.

If you need part of it showing then use another mesh with a dirt texture for the ground.