The concept looks good but the colors are messed up. You need more contrast between the tree and the dark night. Maybe, make the night a little purple-ish... add a moon and then add white lined reflections on the sides of tree and ground, it will make the UB much more vibrant.
I like the idea / concept as stated. I suggest making it more balanced and the edges fade out. I see that's kinda what you were going for but specifically the bottom left has some sharp edges and pixelation.