My advice for making landscape shots better is almost always the same thing. And I'm far from a landscape photographer, so take this with a grain of salt.
But there are 2 key rules to landscape photography, that in my experience seperate the good shots from the bad. The first being; you need something in the foreground. Having a foreground element is key to a good landscape photo more often than not. It doesn't need to be much, a few rocks. A tree. A bush. A lightpost. An animal. A car. A shed. Anything to add a foreground element will strengthen the photo if done properly.
The second thing is this: Most landscape photographers won't even pull the camera out of the bag unless it's golden hour. This is the time, either right at sunrise, or sunset, when the sun casts a golden glow over the land, and is at a low angle in the sky. It adds depth and character to the photo, and requires patience that most people don't have.