The textures themselves don't look too bad, but they still blend togather. Now, that might look different when the game is actually being played and you add the various decorations, but right now, it looks like they're all the same hill.
My advice for that scene is to bring down the background hills some. That will make them look a little further away (I think) and hopefully that's what you want. Are you having them parrallax at all? If so, have them parrallax in the x and y direction (only a little bit in the up and down direction), that would help too after bringing them down. The other thing that might help would be to make the ground on the frontmost layer stand out somehow. Add flowers, dirt, rocks, whatever, to let the player know where they are stepping.
-edit-
Just looked at the scenes again and noticed something: you have a lot of detail in the hills behind the player. I'm assuming those hills are far away (if not, ignore this) and they don't need a lot of detail. You don't need those separate little blades of grass sticking up, just try to make it look fairly rounded and you should be good. You can of course keep the grass, just this might save you some work later on when adding more detail.