What an interesting composition...your use of layers is quite evident in the leaves and water, especially with the way the sky mutes into blue with the objects further in the distance. It truly adds depth.
Even more impressive is the fact that these sharp colors and soft hues can coexist in this picture without being flagrant. The addition of solid, definite objects in this picture illustrates my point even further because it keeps the colors from looking like one giant blob.
The size and lack of detail of the person in the distance strikes me the most, however; I feel as if Nature herself is the true star here--not that she doesn't have the right to be. It really reminds me of Transcendentalism.
Now about the water--how do you do that with paint, particularly with the reflected objects? I really feel like I'm looking at real water here.