Well I'll start this off by saying that the beginning sounded extremely trendy and didn't really stand out from any other trance song I've heard. The piano notes were well thought out, but just sounded so generic alongside that synth. The drums followed much of the same lines.
When the bass line came in around 40 seconds it was extremely refreshing to hear. I like the sound of the bass quite a bit. The synth line that followed on top of that was also very pleasant to listen to, and I'm really glad you switched it up from the melodies in the intro.
The bridge with the piano was somewhat expected. The piano notes sound great, but I think it's a bit hard to focus on the beauty of it with that happy synth line in the background, but that's me personally.
The outro could also obviously use some work, as the song seems to end rather abruptly without notice. Maybe a fade out would be appropriate here?
It doesn't really sound very christmas themed to me, but keep up the good work nonetheless.