Wow! I have no idea how you have done this, but it's absolutely, breathtakingly gorgeous!!! I don't know what I like best, because I somehow like every tiny bit of it. It all looks real enough to touch, especially the snow. And you can almost smell tea and books in Aziraphale's cozy room... But I also love the pencilled pictures very much. The nostalgia they create. The background looks like a postcard, somehow, perhaps because of the gold frame, but it conveys the overall mood very nicely. I admire your how you did the houses and streets (and of course Crowley *g*).
I think you may just have resurected my dead and buried Christmas spirit.