This is a breath-taking photo in it's simplicity. In my experience, it's the simplest photos that have the biggest impact.
The silky water contrasting with the rough tree limb and clouds is superb. Very well done. You have the limb & the sunset both within the middle 2/3 of the grid which is perfect for focusing the eye, if you use that method of composition.
I love how the tree limb combines both the hint of slate gray clouds and the purple tying it together - showing that not just water can mirror colors .
The huge *kablam!* of color that instantly demands to be seen really packs a punch and adds an interesting excitement to this seemingly quiet and subdued piece ... well played.
Overall, it's an excellent piece that would be equally beautiful on a wall in a gallery or in a home.