Count me in for including the rock on the right and some dark water ... as I think the viewer's entrance and encounter is enhanced with a little in-boxing. In the second picture (cropped tighter) the tree intrudes on the picture plane, which runs counter to the genre as well as the subject as announced by the title. And with the third element (the water) removed, a dialog is created between the two trees. I don't know the artist's intent, but that dialog is, to me, distraction and not substance.
For fancy improvement, I would compress vertically the water at the bottom, and darken the lights in that water. I suspect this subtle and slightly moody repoussoir would serve as a successful visual entrée to the very there tree.
Fancy or simple, I would soften the edge of the fog/flare where it crosses the right-rear tree trunk.