Always most impressed with the quality of your images.
Now then ...
Composition is impeccable. The divisions within frame, lines, et al ... do work well to my eyes.
Too dark?
Hmm, not really.
Think 'we' tend to get caught up projecting our own creativity onto an image.
This is how you intended the final presentation, so ... 'we' should view it as such ('we' may enjoy it, or not). And there is more than sufficient delineation (ergo, and recall my opening sentence).
The quality and character of light here is what is important.
I am, personally, robbed of the full impact due to having to view a smaller resolution on the note of my own viewing monitor.
Took your image up to the highest resolution for a look around ... that beam (more or less) of dispersed/reflected (searching for apt words, can't at the moment ... sorry) light does look much better at the higher resolution.
'Cept the context is obviously changed what with me looking at a smaller portion of the higher resolution. In short, it does not appear as 2D as it does when viewed larger.
Very nice mood and feel to this one. The finishing touch, compositionally and conceptually (maybe?) is the light on the horizon.
I could see this hanging on the wall of a home office. Subdued lighting, and fitting in quite well. Quite a nice contemplative piece.
"There is always something waiting at the end of the road ... if you're not willing to see what it is ... you probably shouldn't be out there in the first place."
Q: Why did the blonde get so excited after she finished her jigsaw puzzle in only 6 months?
A: Because on the box it said From 2-4 years.
Q: How do you confuse a blonde?
A: Ask her to alphabetize a bag of M&Ms.
Q: Why are dumb blonde jokes so short?
A: So brunettes can remember them.
Stan