Preparing the Map

For this tutorial we are going to use the Snow Plains tileset. Set your map size to 23X19.

Roads

First of all, I have seen some people using this as a road when it comes to snow maps.

I don't see that as a road. I see it like something, that should be near water (Roads should not be straight!)

This, is a road.

And this is how you should use the other one (In my opinion)

Decorations

Now put in some tress, hills, footsteps, grass, flowers (yes, flowers), to make the map more realistic. Use bridges if you can. They make a good view for the map.

Use everything that's useable from the tileset. But remember, you have to think realistic. To make it even better, use snow in weather command, and add a fog, to make it even cleaner.