|Greetings from the Critique Club!
First Impression: This image is certainly one to make viewers take a second look, because it is not apparent immediately what exactly is going on in the photo.
Composition - The photo seems a little bit cluttered to me, with so many trees, it takes a bit to notice the enchanted one that is apparently the main subject.
Lighting - The lighting here provides an atmostphere that goes well with the enchanted feeling. You've obviously created this effect on purpose from reading your comments.
Focus - The focus seems to be reasonably clear, but it's hard to tell since the details are so small because of the many objects in your shot.
Colors & Contrast - Interesting colors, and good contrast.
Meets the challenge? - You had a shutter speed of more than 30 seconds, so you've met the challenge, but this image doesn't visually express it to me, there's no reason why this couldn't have been taken at 5 seconds to me. I believe this is where your average score comes from - voters wanted to see something that looks like a long exposure.
Subject Choice - I think that choosing a closer crop to one tree, and using just that single subject would've improved this shot a lot. The background building distracts.
Title - Well you've certainly gotten an eerie feeling with this one, and the blue light certainly doesn't appear natural, so your title fits.
Photographer's comments - This was an obvious effect judging by your comments, so congratulations if you've achieved what you were aiming for. Don't let the score get you down, what's considered great on DPC isn't the only type of art out there. Keep doing your thing if it makes you happy.
My Suggestions: I'd like to see a tighter crop, and a less distracting background here. I think that would improve your score quite a bit.
If you have any questions, comments or concerns regarding this critique, feel free to PM me.