Working things out on paper (pardon the handwriting!):
Leads to this:
To the right of the player is a Taiga (mostly over the ocean), to the left is either a Forest, or Woods, I can't remember. In the distance is probably tundra.
Remaining work on biomes include letting them change the elevation (deserts, plains, tundras and swamps should all be flat), and changing the grass colour depending on the biome type. The border between frozen biomes and not frozen ones will get way nicer.
The sky colour changes slightly depending on how cold the area you are in is.