Two things. I would reduce the reflection effect of the water as it seems like the water is liquid nitrogen. The boards that are warped on the pathways and boardwalk should also be warped differently to give the the appearence of the act of the wood warping a more natural look. Right now the boards look like one of the villagers put them in a board stretcher and purposely warped them.
I found a National Park in Sweden that resembles the backdrop for your video.
Natur Vards Verket
Flora and Fauna 1
Flora and Fauna 2 - This site has a group of fauna related to Sweden's environment. Adding them to your video should make the video more Nordic and geographically factual.
Watch out for the Cloudberries though....some have said that a few Alva still exist and will lure the unwary to their water slumber by enticing them with Cloudberries.
I have always liked the mythology behind the Norse as it projects a powerful view of the natural forces with respect to the natural forces of nature....the women aren't too bad looking either.