Welcome to the forum.
Landscape photography (well a lot of photography really) is very subjective. You might like something that I don't and I might light something that you think is crap. And neither of us would be right or wrong. So my advice is to shoot what you think looks good.
There are elements that you can consider...like foreground, midground & background. You can also think of how the viewer's eye will see the image and how it will move through it. For example, in your first shot, the trail leads the viewer's eye into the shot, that's great. But where does it go from there? The trail just disappears from view and we are sort of lost in the image, without anything specific to look at.
The 4th shot (my favorite one, very nice), has some great lines in it. These lines lead the viewer's eye into (and out of) the shot. They lead the eye in and around the image...even in a continuous loop. This is often a good thing, the more the eye can easily move around the image, the longer we tend to look. Besides the big log in the front, there really isn't a strong focal point to look at...but because of the lines, it's still a really good shot.
Of course, light is the most important aspect of photography. So shooting your scene when the light is 'right' is a big part of successful landscape photography. Part of this is watching the range of light and dark tones. For example, your 2nd shot, has bright areas and dark areas. The dark areas are just about lost into shadow because the range is too great for one single shot.
I think you are off to a good start...I look forward to seeing more.