I've always wanted someone to make a wallpaper with that scan. I remember extracting it and having no idea what I should do with it afterward, haha. Oh well, on to the wall...
The extraction is very clean and nicely done, and the pattern looks okay with the idea that you have going on. I also love those snow flakes to death, they are so detailed and well executed.
The scan is sort of low quality, you could've cleaned it better somewhat, but I know the original scan wasn't the best quality, so its okay. The background could use more details I guess, the trees look crowded how you made them a gradient like that, as well as the fog needs to look more like fog and less of a blob.
You have the right idea, you just need to work a little harder at it, and I'm sure it'll all come out great. :) Keep up the good work!