3, 2, 1..... GO!!!!!
I played a bit with the default hand tracking template to create a 3,2,1 Go countdown and I think it turned out pretty well! Give it a try and let me know what you think.
https://www.snapchat.com/unlock/?type=SNAPCODE&uuid=e0a40e4f00c340b081ecc04dad99b10d&metadata=01