The first one I found very nice to look at, with two small exceptions. First, yes, the stairs in the cliffs are out of place. Second, I'd suggest a different style of roofing for the building. I've never liked those bush-type tiles, because of their black outlines.
I haven't a problem with the bushes. People need to take different things into account for their levels, and that's one of them that was done right. If there is flat land near a water source, and that source is abundant, there will be vegetation.
In a nutshell, very tasty eye candy.
The second level's main selling point would obviously be the water. Therefore, some more original detail would be in order. The rocks in the water and the waves look too ordered, almost as if you used the same tile pattern over and over. And I'm positive I've seen that building before.
Very promising work, especially from someone who doesn't specialize in levels.
