Yeah I like that icy feel you have going with the first map too. The second map, if you want my opinion, could us a bit of a blurto get rid of the fine definition and maybe a bit lower opacity, One of the things about snow is when you look down at an area snowed under, one of the things that you should notice is a LACK of detail to be seen. Snow fills in the low spots and the lack of contrast (white on white) sort of gives the impresion of evenness to the terrain, unless there are some major diffences in elevation