Really really really[...] basic moonlight scene

Hi, this is my very first scene in Blender and I would like some tips/critiques/anything about this.
I started about a week ago to learn how to use Blender and I know this is veeeery basic and scandalously easy but before I go on and try to complicate things I would like some feedback from you.
First I would like to add some other objects in the scene, maybe a little pond to create a nice reflection effect with the moonlight.
Second, I don’t like the outcome of the sky. I used an hdri image as environment texture but it didn’t work well.
Anyway, this is the rendered image in cycles, 1000*1080 with 200% percentage scale.



Thanks for your time :slight_smile: