Reindeer Interior - BG and boards
Here is the background for the next shot. I'll start the scene out fairly dark, and then lighten it up as Santa busts through the doors. There are 2 backgrounds - the first one is absent of blue light and will probably be darkened in the composition. I will matte in the blue light forming as the doors open. The BG is pretty simple - the reindeers will take up most of the space so no need to distract with extra details.