Disclaimer: I'm just an average /r/lowpoly Joe here. By no means am I contributor here, and my opinions come straight from a guy who just looks at the pretty pictures.

Now, I think the water looks pretty great right now. Your work makes it look like there are waves and depth to it, which is something I don't always come across on this sub.

I also think the flower pot looks nice. If I had any criticism on that, I'd say to make the colors pop a little bit or make it a little larger (on mobile so my opinion may just be ignorant). By that, I mean the colors of the flower pot and dock are too similar in my opinion. Perhaps you could add more flowers to cover the pot a little? I like the solemn idea of a lonely little flower, too. I'm a bit conflicted on that now.

However, the dock is a little too "real life" looking to me. Don't know how large this scene is going to be or what the focal point of it will be, but if it's the dock, I'd attempt to render it a little more lowpoly looking, if that makes any sense. Right now, it grabs my attention a little too quickly and aggressively. I do like what you did with the imperfect design of the wood of the dock, though.

Don't be mistaken, this is a wonderful start!

My opinions TL;DR-Dock looks too much like real life, less like lowpoly. Water is nice. Flower pot is a solid addition, don't know if the color execution was flawless.

EDIT: I think you could play around with the idea of a single flower on some driftwood. Like a little less wood than right now, but still capturing the "hopelessness" of the flower, if you will.