I did not like the way the snow was on the front tree so I decided to remodel it. I used a basic trick: selected the top faces of the tree (ignoring backfaces)/detached it/shell/noise, to create a better fitting snow.I also added more trees in the background with ForestPack.

I also modeled some snow accumulation on the windows and steps. More ppl were added and the chosen expostion is now happening inside the museum. I decided to use 3D people instead of adding the usual 2D cutout on photoshop because since light is a very important part of my concept, and I wanted the light on them to be just right.

I finished with my materials. The wood is now more dynamic and I added vrayFlakesMtl to put some shine to the snow. The image is now ready for a final render and to start post production.