Just as an FYI, it appears you can plant Acorns on snow and a snow-covered tree will appear.
As for my own world, I started a new homeworld since I made some changes and decisions on the old one that I just wasn't happy with. I used TEdit to import the buildings I already had and put them in a better location. I also increased my world size to Medium just because a small world felt absurdly small after the last few months on the large GAF server.
I'll get some screenshots up, but I went and took the highest point on my map, increased their elevation substantially, and then piled snow on top of them so I have a cool Mountain biome complete with snow. I actually have two peaks with a nice little valley between them, and I'm looking forward to making a little cabin there for shits and giggles. Even has a lake.
Armory, Greenhouse, Mage's Tower and Healing Temple are complete. Still need to do the Crafting Tower, Archives, Construction Tower, Costume Shop, Bank, General Store, and my home Tower... so yeah, got a lot to do, still.