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.
Hey thanks for the replies guys, I'm in the middle of moving house so haven't been able to get online.
Thanks for the links AB-1 I agree with you 100%, i never had time in the end to get those nice waving / living things in there, I might jump back into it and redo some stuff in the future. I've bookmarked those links, awesome!