10. Falling Snow You Can Actually See
Here’s the trick most people miss — the snow inside has to look like it’s falling, not just sitting there. I used white stained glass panes hung from the top at different heights, plus snow layers on every roof and fence, and it genuinely reads as snowfall when you walk around. Add some white carpet drifts along the paths, and the whole dome feels alive. It’s a small illusion, but it makes the biggest difference.