I like the idea and the overall design. It's eye catching.
A bit busy and I think that's because the trees crowd the text area a bit too much.
They also seem to be background in that they are lighter with less form, like a distance object would be and the poster info more FG because of the deep color in that area. I think if you had another layer of the trees in green it might work better.
The shadows are too dark in my opinion and make the FG trees seem more ghostly and add to the text crowding.
I have a suggestion for something you could try. Create the rest of the border and place it over the rest of the image but lower the opacity. Just a thought.
I made an example of what I think could make the trees work better -- if you stick with the trees and the current design. You might also consider ornaments or another symbol instead of the trees. But I do like the tree idea. Without the psd I can't really demonstrate what I would like to change about the crowding issue I see. I think this is probably the most important problem.
Anyway, this is just my take. I do like the design, and think with a little "sprucing" up, it would be great.
View attachment 39062