White Birch looking good, the lighting and the overall mood is spot on.
Now I know its pretty late in the game but during the last livestream I saw how easy you were able to make color adjustments.I mean from full color to sepia.
So I had this idea which I posted on the chatbox about having some sort of color grading as you go up the tower.
Basically you start of grayscale or perhaps desaturated bluish hues /monotone then eventually as you go higher you'll have full color with warm reds and yellows.
I think the progression from cool to warm go well with the theme and also can serve as a visual cue of the progress you make as you climb the tower.
Just my two cents though but overall I think you guys are doing an awesome job with the prototype can't wait to play it.So yeah cheers.
P.S. Jane can you post some of the watercolor painting you did of tress I believe,I'm a sucker for those kind of artworks since its my most favorite traditional medium