Bit short to tell man....I think the snow is too bright (spec?)....the terrain is ok man....though I would look at some Arctic stuff...but if you look at Greenland thats probably what it would look like.

https://yellowairplane.com/Adventures...Antarctica.jpg

Xnormals is a free program that makes use of lo poly/hi poly meshes and produces some damn good maps with very little fuss. Im using it, Im also using crazybump too...thats also very cool.

https://www.xnormal.net/1.aspx

cheers bullet