Man, I love this. Still love this. I remember this as being one of the first pieces of fanart I really noticed back when I had just gotten into the show, which was around November/December, and it definitely was one of the reasons I decided the fan community was worth getting into.
The scenes are all just so adorable, and I obviously love your art style and use of colours, but one of the things I really admire about this are the backgrounds. You managed to find a really great middle ground for the amount of details - there's a bunch of little visual treats (love the snowpony in the CMC panel), but the backgrounds don't distract and rather compliment the characters wonderfully. And the shading really adds a bunch - together with the painted look and warm colours it makes them look really inviting.