I mean I usually give a kid a high five, but generally I don't like to put the focus on podium placements.
If they get first place, we'll head back in to practice next week looking for ways to improve their technique where it's weak, and work upgrades where they're ready.
If they get dead last, we'll head back in to practice next week looking for ways to improve their technique where it's weak, and work upgrades where they're ready.
I don't want them fixating on medals or placements or even scores; their main focus should always be on improving their technique bit by bit, step by step.