Trigger animation.
See: literally any of Zappy’s guides
Anyway, nice try for a first guide, but like sweet ‘n’ sour sauce said, it doesn’t really focus on making a Winter-Olympics-themed map. It just tells you what sentries are winter-themed and how to make some flags and circles.
Try adding how to make the actual games featured in the Olympics, like luge. That would probably be especially fun to re-create, since slides in GKC are a thing
Toaster’s idea?
Not really, actually. Probably less time than making a good circle in custom shapes.
The hardest part is matching the background color, but other than that, very easy.