Upload & Sell: On
Welcome aboard, Dan.
Pretty scene and I like the reflections, stillness of the water, whether smoothed by long exposure or natural, and the sharpness and detail beyond.
Some technical issues and questions here. First, there seems to be a purplish hue in much of the image. Did you play with white balance or selective saturation? Second, there is significant purple fringing seen in the trees. Most likely related to lens issues. Why di you stop down all the way to f16? You would have plenty of depth at f 8 on most lenses and you are working on sharpness of the distance, blurring the foreground, so focusing near doesnt even matter. Fro the smoothness of the water I imagine you'd be pretty good at a few seconds, although I really dont know what the surface looked like.
A major challenge of landscapes is finding, ideally, foreground, mid-ground and far ground interests and some focal point(s) for the overall image. Otherwise you end up closer to documentary style images. While valuable, many folks aspire to more than technical document where they have been.
You have some pretty foreground reflections and I would reduce the purples in them. The far ground, so to speak, is the main subject and my eye gets drawn to the exposed rocky surfaces. They offer some nice textural contrast to the water, but not much more interest.
Most would suggest some crop from the bottom to place the shoreline or outcroppings closer to the top third rather than middle of the image. You lose some water but gain some richness and guide the eye in better.